Ocean picture stone jewelry

Ocean picture stone jewelry DEFAULT

Blue Iceberg Ocean Picture Rock-Blue Iceberg

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  • Blue Iceberg Ocean Picture Rock-Blue Iceberg




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An icy blue mountain appears in the fog as we sail the pastel ocean. I found this Ocean Picture Rock (aka Ocean Scene Agate) very intriguing when I discovered it at the Tucson Rock & Mineral Shows. This is material is a fairly recent find from British Columbia, Canada. You can lose yourself in the primarily blue and white scenes in this gemstone. Although available, this material is one of those undiscovered treasures that people will not generally recognize. What I find interesting is the lovely light patterns that would be equally wearable in formal or informal settings. This pendant could be worn with most anything. Wrapped in 14/20GF and Argentium Sterling.

Dimensions: 2 1/4"h x 1 1/2"w
Bail: 1/4"

Sours: https://www.snobappealjewelry.com/store/pendants/744-blue-iceberg-ocean-picture-rockblue-iceberg
ShopeeToys, Games & CollectiblesCollectiblesNovelty ItemSemi-Precious Stone Ocean Jasper (Pink)
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ShopeeToys, Games & CollectiblesCollectiblesNovelty Item
Metro Manila, Metro Manila
Semi-Precious Stone Ocean Jasper (Pink) Craft Type : Beading and Jewelry Making Materials: Gemstones Color: Pink Sizes : 6mm (Approx. 65pcs) 8mm (Approx. 46pcs) 10mm (Approx. 40pcs) 12mm (Approx. 33pcs) What is the Use of Ocean Jasper ? Ocean Jasper will invite you to open yourself up to its soothing energies, to breathe in its essence, to acknowledge its gentle power, and to cast your burdens aside. It will give you peace and allow yourself to let go and attune yourself to being physically and spiritually present. This stone embodies happiness, joy, and all the good things in life. ✔️ALL ITEMS ARE AVAILABLE UNLESS MARKED AS "SOLD OUT" OR ELSE PM US FOR THE AVAILABILTY LIKE & FOLLOW US FOR UPDATES! 👍🏻 HAPPY SHOPEE-ING! 💟 #diybeads#ocean#jasper
Sours: https://shopee.ph/Stone-Ocean-Jasper-Pink-i.30530599.1268614501
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Photos of Colored Stones

Home » Gemstones » Colored Stone Pictures

The term "colored stone" refers to any species of gem, other than diamond.

(An exception is colored diamonds - they are considered to be colored stones.)

Author: Hobart M. King, PhD, GIA Graduate Gemologist


Actinolite (Cat's-Eye)

Actinolite is green to grayish green mineral of the amphibole group found in metamorphic rocks. It sometimes has a fibrous texture that produces a strong cat's-eye.



Agate is a cryptocrystalline quartz that is translucent and patterned with bands, plumes, dendrites, or inclusions that produce a colorful, interesting appearance. It is a popular gem cut into cabochons, beads, and ornamental objects.

almandine garnet

Almandine Garnet

Almandine garnet, also known as "almandite," is an iron-rich, red-to-purple garnet that is geologically very common and typically sells on the more affordable side of the garnet price range. For that reason, it is common in jewelry.



Amazonite is a trade name given to a light green to bright green variety of microcline feldspar. It has a Mohs hardness of 6 with perfect cleavage, so it is best used where it will not suffer abrasion or impact.



Amber is a fossil resin secreted by ancient trees. It usually has a yellowish to orangish brown color but can be white, greenish, bluish, or black. It is an organic gem easily cut and polished into bright, lightweight gems.



Amethyst is a transparent variety of quartz that ranges from light lilac to deep purple in color. It is one of the most popular faceted gemstones and is sometimes cut en cabochon. It is found in many locations around the world.



Ametrine is a bicolor quartz that is half AMEthyst and half ciTRINE. The color combination is caused by twinning. It is commercially produced at only one mine in the world, located in eastern Bolivia.



Ammolite is a trade name used for iridescent ammonite shell. It produces a bright flash of color that rivals opal and labradorite. All of the world's production of this organic gem is from a small area in Alberta, Canada.



An extinct group of marine invertebrate animals that produced a chambered shell. Their fossilized shells are often cut and used as organic gems.



Andalusite is a metamorphic mineral that is strongly pleochroic and an underappreciated gem. A variety known as chiastolite has grains of graphite concentrated into a cross-shaped feature.


ant hill garnet

Ant Hill Garnet

Ant hill garnet is a novelty gem that ants excavate, haul to the surface and deposit on their ant hill. These red chrome pyrope garnets are often found on ant hills in parts of the southwestern USA.



Apatite is a mineral that is cut as a gem when found in clear crystals with attractive colors. It has a hardness of 5 on the Mohs scale and is brittle. It is a "collector's gem" rather than a jewelry gem.



Aquamarine is a blue variety of the mineral beryl. It receives its name from its seawater color. It ranges from a very light blue to a richly saturated blue. The richer color is much more desired.



Aventurine is a quartz variety that contains a blizzard of tiny reflective inclusions such as muscovite, hematite, or fuchsite. Light enters the stone, reflects from the grains and produces a flash known as aventurescence.



A beautiful dark blue opaque gem material found near copper deposits. Associated with malachite and chrysocolla; soft (H: 3.5-4); cleaves easily. Best used as cabochons in jewelry that will not encounter wear.



A beautiful blue and green gem material that is a combination of the copper minerals, azurite and malachite. It is soft and chips easily. It is cut into cabochons for use in jewelry that will not encounter wear.



"Beryl" is a mineral with several gem varieties based upon color. Green beryl is emerald. Blue is aquamarine. Pink is morganite. Yellow and yellow-green are heliodor. Red is red beryl. Clear is goshenite.



"Benitoite" is a rare barium titanium silicate mineral found at a few locations worldwide but in gem quality at only in one location in San Benito County, California. It is the "state gem" of California.

black opal

Black Opal

The name "black opal" is used for an opal with a black base color. This specimen here has blue play-of-color on a black base.



Bloodstone is a dark green variety of jasper that displays numerous splashes of red color. These red splashes remind people of blood, and that is how the stone received its name. It has been a popular gem for thousands of years.

boulder opal

Boulder Opal

"Boulder opal" is a name used for a rough or cut rock material that displays precious opal within its surrounding rock matrix.



A bronze to greenish variety of enstatite with a metallic luster. It is sometimes cut and polished as a gemstone.



Often called Bumblebee "Agate" or "Jasper," it is instead a rock formed at several volcanic vents in Indonesia. Some specimens reportedly contain arsenic. Not recommended if the stone will be in direct contact with your skin.



Chalcedony is a name used for any cryptocrystalline quartz such as agate, jasper, petrified wood, chrysoprase, bloodstone, onyx, sard, and carnelian. Some people reserve the name for a blue, unbanded, translucent material.



Charoite is a light lavender to deep purple silicate mineral that has swirling, fibrous, or spotted patterns. It is a rare and relatively new gem material, discovered in Russia in 1978.

Chinese writing stone

Chinese Writing Stone

A very interesting black metamorphosed limestone that contains geometric crystals of andalusite. Named because the intersecting white crystal shapes remind some people of "Chinese writing."



Chrysoberyl, a gem unrelated to "beryl," is an "extreme gem." It has a hardness of 8.5, a very high luster, and a high index of refraction. It is sometimes a color-change stone and is best known for its "cat's-eye."

cat's-eye chrysoberyl

Chrysoberyl Cat's-Eye

Chrysoberyl often contains oriented inclusions that produce a sharp line of light across the surface of the stone in reflected light. This optical phenomenon is known as a "cat's-eye."



Chrysocolla is a green to blue-green gem material that forms during the oxidation of copper deposits. The cab on the left is malachite with chrysocolla. The cab on the right is blue chrysocolla in white quartz.


Chrysoprase is a yellowish green to bright green variety of chalcedony that is thought to obtain its color from small amounts of nickel. It is a color-variety of cryptocrystalline quartz.



Citrine is a transparent variety of quartz that ranges from golden yellow to yellowish orange to golden brown in color. It is usually cut as a faceted stone and is sometimes produced by heat treating amethyst.

colored diamonds

Colored Diamonds

Colored diamonds are diamonds that have a noticeable bodycolor when viewed in the face-up position. Gems with superb color can fetch extraordinary prices, often over $1 million per carat.

common opal

Common Opal

Common opal is an opal material that does not exhibit a "play-of-color." Most common opal is common in appearance, but some is spectacular in color or pattern.




Coral is a colonial organism that lives in warm, shallow marine waters and often develops reefs. It is a hard calcium carbonate material that can be cut or carved and polished into beautiful organic gems.


Crinoidal Limestone

Crinoids are organisms that once lived on the ocean floor. They looked like a plant but were actually an invertebrate animal. Their fossils can be found in limestone that can often be used to produce interesting gems.

crystal opal

Crystal Opal

Crystal opal is a term used for transparent-to-translucent opal material that has a play-of-color within the stone.

cultured pearls

Cultured Pearls

Cultured pearls are produced by placing small "seeds" of shell material within a live freshwater mussel. The mussel coats the seed with successive layers of nacre to form a pearl. They are produced in a variety of shapes.

demantoid garnet

Demantoid Garnet

Demantoid is a calcium-rich garnet. It has the highest dispersion (ability to separate white light into colors of the spectrum) of any gemstone - higher than diamond. This gives demantoid an exceptional "fire."



The most popular gemstone and hardest natural material. A nearly colorless diamond is set in most engagement rings sold in the United States. The custom of giving an engagement diamond is spreading to other countries.

dinosaur bone

Dinosaur Bone

Dinosaur bone is often petrified (fossilized by being infilled and replaced by quartz). The quartz can be very colorful. When the petrification is thorough, the material can be cut and polished into attractive gems.



Diopside is a magnesium, calcium silicate mineral. It often contains traces of chromium that cause a vivid green color. These stones are known as "chrome diopside" and can serve as an alternative gem for emerald.



Diorite is an igneous rock that can accept a bright polish. It is usually a mixture of dark and light-colored minerals. When these are of attractive colors, the rock can be cut into nice cabochons, beads, and other lapidary items.



Dumortierite is a dark blue to dark greenish-blue mineral found in metamorphic rocks. It is typically opaque and used to produce cabochons, beads, and tumbled stones.



Emerald is the gemstone name of the mineral beryl when it has a rich green color. It is the most popular stone from the beryl mineral group. Most emeralds have abundant inclusions and fractures.



Eudialyte is a rare mineral found in igneous rocks. It serves as a minor ore of zirconium and as a minor gem mineral. It occurs in yellow, brown, and bluish crystals - but bright red specimens are favored as a collector's gem.

fire agate

Fire Agate

Fire agate is a rare gemstone which exhibits a warm iridescence on its botryoidal surfaces. The specimens shown here are from Arizona - one of the few locations in the world where fire agate has been found.

fire opal

Fire Opal

A translucent-to-transparent opal with a warm background color of yellow, orange, or red. It may or may not exhibit a "play-of-color." The warm, uniform background color is what defines the stone.



A mineral composed of calcium and fluorine (CaF2) that can be colorful and attractive and is often cut as a gemstone.

fossil coral

Fossil Organisms

Coral and bryozoans are organisms that live in warm, shallow marine waters. They are often fossilized by being infilled and replaced with quartz or calcite. These materials can be polished into attractive gems.




Gaspeite is a bright green gem that has become a popular addition to Southwestern-style jewelry, especially as an inlay material. It is also a rare nickel carbonate mineral.



Garnet is the name of a group of minerals with a common crystal structure, but variable composition. Most garnets are red, but the stone also occurs in orange, yellow, purple, green, pink, black, and other colors.

star garnet

Garnet (Star)

Rare specimens of garnet contain a rutile silk that gives them a four- or six-ray star when cut properly. They are highly valued and have been mined commercially only in Idaho, India, and Madagascar.

gem silica

Gem Silica

Gem silica is a rare variety of chalcedony that is colored bluish green by tiny inclusions of chrysocolla or copper salts. It is the most valuable variety of chalcedony.



A man-made colored glass that contains abundant, flat-faced, highly reflective inclusions that produce a glittery metallic flash when they interact with light.



The colorless to near-colorless variety of beryl is called goshenite. Some of the earliest eyeglasses had lenses made from goshenite because the stone often forms in large, transparent crystals that are free of inclusions.



A man-made glass produced by fusing volcanic ash from the 1980 Mount St. Helens eruption. It is sold in novelty jewelry to tourists visiting the eruption site.



Heliodor is the name given to yellow to yellow-green gems of the beryl mineral group. They can be attractive, durable, high-clarity stones with a relatively low price. Surprisingly, they are infrequently seen in jewelry.



Hematite is an iron oxide mineral and the primary ore of iron. It occasionally occurs in a silver metallic form that can be polished to a mirror-bright luster. Cabs cut from hematite are very popular and have a very "weighty" feel.



Hemimorphite is a zinc silicate mineral that occurs in white, blue, and greenish blue colors. It is a minor ore of zinc. It lacks durability and is used as a collector's gem or in jewelry that will be subject to light wear.

hessonite garnet

Hessonite Garnet

Hessonite is a variety of grossular garnet that is rich in iron and manganese. It has an orange to red-orange to reddish brown color and is sometimes called "cinnamon stone." It is occasionally seen in jewelry.



Hydrogrossular is a garnet in which hydroxide partially replaces silica. Often an opaque green stone, its nickname is "Transvaal jade" because it looks like jade and is found in the Transvaal area of South Africa.



Iolite is the name given to gem-quality cordierite. It is a strongly pleochroic gem material that, when properly oriented, can produce gemstones with a deep bluish color similar to sapphire and tanzanite.

iris agate

Iris Agate

Iris agate is a finely banded agate with a spectacular display of color when it is cut into thin pieces and illuminated from a direction that sends light through its very thin bands.



An extremely durable material that has been fashioned into gems, sculptures, tools, and weapons for thousands of years. Extremely popular in China. There are two varieties: jadeite and nephrite.



A variety of chalcedony that displays characteristics of both jasper and agate. It has both opaque areas and translucent areas.



A variety of opaque chalcedony that is often brightly colored by impurity inclusions. It can be almost any color and is popular as beads, cabochons, and tumbled stones.



Jet is a coal with a uniform texture that can be cut into attractive black gems. It was popular in mourning jewelry of Victorian England. It has a low specific gravity, which makes a long strand of beads lighter than expected.

K2 granite


K2 and K2 Granite are names used for an azurite granite found at the base of K2, the world's second-highest mountain. It cuts beautiful cabs and polishes to a bright luster. Some people call it K2 Jasper, but that is incorrect.



A metamorphic mineral that occurs in beautiful hues of blue and green. It has perfect cleavage and has a hardness of 4.5 in one direction, 5.5 in another, making it best used in items that will not be subjected to wear.



A gemstone from the plagioclase feldspar family that produces flashes of iridescent blue, green, yellow, orange, or red when moved under incident light. This luster is known as labradorescence.

lapis lazuli

Lapis Lazuli

A blue metamorphic rock that has been used as a gemstone for over 6000 years and as a pigment for at least 1000 years. It is a popular gem material used for cabochons, beads, inlay, and small sculptures.



Larimar is a rare blue variety of pectolite found only in the Dominican Republic. It is popular because of its delicate blue color. It must be used with care because it is fragile and will fade with long exposure to bright light.

lemon quartz

Lemon Quartz

Lemon quartz is a yellow variety of quartz that is transparent to translucent. It is often cut as a faceted stone or cut en cabochon.



A lithium-rich mica with a rose to lilac color and an aventurescent luster that is sometimes used to make cabochons, tumbled stones, and other lapidary projects.



A magnesium carbonate mineral that is often confused with howlite due to their similar appearance. Magnesite can be easily dyed, and specimens dyed a blue color are used as imitation turquoise.



Malachite is a heavy, opaque, green gemstone marked with bands and swirls. It is a copper carbonate mineral that is soft and cleaves easily. It is best used in items that will not be subjected to abrasion or impact.

malaya garnet

Malaya Garnet

Malaya is a pink to pinkish brown or reddish variety of garnet. Compositionally, it is a mixture of pyrope, almandine, and spessartine. It is occasionally seen in jewelry.

mali garnet

Mali Garnet

Mali is a yellow to yellowish green variety of garnet, named after the African country of Mali. It is a mixture of grossular and andradite that is occasionally seen in jewelry.

Find Other Topics on Geology.com:

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Mary Ellen

Mary Ellen Jasper

Mary Ellen is a rock that consists of red jasper and silvery hematite. The jasper is a fossil stromatolite, a layered structure built up by sediment-trapping algae that lived on Earth about two billion years ago - long before land plants.

matrix opal

Matrix Opal

Matrix opal is a material in which precious opal is in an intimate mixture with the host rock, instead of being confined to seams and patches.

maw sit sit

Maw Sit Sit

Maw sit sit is a rock composed of jadeite, albite, and kosmochlor (a mineral related to jadeite). It is attractive, has a bright chrome-green color and accepts a bright polish, and for those reasons it is used as a gemstone.

melanite garnet

Melanite Garnet

Melanite is a lustrous, black, opaque variety of garnet that is not often seen in jewelry. It is a titanium garnet of the Andradite group and is sometimes called "titanian andradite."



Moldavite is a glassy material that is thought to have formed when a large asteroid impacted a location in Europe about 15 million years ago. The target rock and impactor melted and solidified into an olive green glass.



A colorful gem material mined in Australia that forms from the deposition and lithification of a sediment composed of the silica tests of radiolarians. It is a popular material for cabochons and beads.



Moonstone is a name given to translucent orthoclase feldspar that exhibits adularescence (a white-to-bluish light that floats under the surface of the stone when it is turned under a source of light).



Morganite, also called "pink beryl," is the pink- to salmon-colored gemstone member of the beryl mineral group.

moss agate

Moss Agate

Moss agate is a transparent-to-translucent chalcedony that contains mineral inclusions that are shaped like moss, trees, leaves, or other vegetation. Material from Montana localities is very popular.

mother of pearl

Mother of Pearl

Mother of pearl, also known as "MOP," is the thin inner nacreous layer of a mollusk shell. It can be white, cream, or gray in color with a beautiful iridescent play-of-color. Used in jewelry, buttons, musical instruments, and more.



Nephrite and jadeite are two very similar minerals that are both known as "jade." Nephrite is the more abundant and less valuable mineral of the pair - but it can still have great beauty and appeal.

ocean jasper

Ocean Jasper

A gem material named because it is found below the high tide line of a Madagascar ocean beach. It is patterned with beautiful eyes and bands in a wide variety of colors. It also can grade from agate to jasper in a single stone.



Onyx is the name given to a black chalcedony with parallel white banding or a red chalcedony with white banding. High-quality pieces are sometimes used to carve cameos.



A spectacular gemstone that produces flashes of iridescent color when moved under incident light. Opal also occurs as nonphenomenal gems with beautiful body color. There are many types of opal.

Opalized Wood

Opalized Wood

A type of petrified wood that is composed of opal, usually common opal, rather than chalcedony or another mineral material.

peanut wood

Peanut Wood

A variety of petrified wood from Australia. Some pieces have white markings that remind people of peanuts. It is a fossil driftwood that has been bored by marine clams.



Pearls are a very popular gem material. They are produced by shellfish, and people have used them for personal adornment for thousands of years. These are cultured freshwater pearls produced in Tennessee.




Peridot is a popular green gemstone from the olivine mineral series. It is widely used in commercial jewelry and is a birthstone for the month of August.

petrified palm

Petrified Palm

Louisiana has been the "bayou state" for over 100 million years. During that history, many palms have been fossilized. Today they are called "petrified palm wood" (but they really are not wood) and polished into beautiful gems.

petrified wood

Petrified Wood

A fossil that is formed when woody material is buried, then dissolved materials in groundwater precipitate to replace and infill the wood structure with silica, opal, or other mineral material.

pinfire opal

Pinfire Opal

An opal that exhibits pin points of fire instead of a broad flash is known as "pinfire opal." There are many types of opal.



Pinolith is a metamorphic rock composed of white magnesite crystals on a background of graphite-pigmented dolomite. It is a rare material that is found only in Austria and Spain.

polka dot agate

Polka Dot Agate

A beautiful blue to white to yellow translucent agate with lots of colorful dots. It is an American gemstone mined in Oregon.



Prasiolite is amethyst that has been heat-treated to a leek-green color.



Prehnite is a calcium aluminum silicate mineral. Specimens with nice color and clarity are often cut as gems. This gemmy yellow prehnite cabochon was cut from material mined in Australia.



Purpurite is a manganese phosphate mineral with a bold purple color that is often cut into cabochons. It has a low hardness (4 to 5) so is best used in jewelry that is not expected to receive rough wear.



Pyrope is a magnesium aluminum garnet that is usually red in color. It is often formed in the mantle and transported to the surface in deep-source volcanic eruptions that form diamond deposits.



Quartz is the most common mineral in Earth's crust and often occurs in colored gem-quality crystals. These include rose quartz, amethyst, smoky quartz, citrine, lemon quartz, and others.

quartz rock crystal

Quartz, Rock Crystal

Clear quartz is a common mineral material that is sometimes cut as a gem. It is often called "crystal quartz" or "rock crystal." It is the state mineral of Arkansas.

quartz (rutilated)

Quartz (Rutilated)

Rare specimens of clear quartz have needle-shaped inclusions of rutile. These can be used to cut interesting and attractive cabochons and faceted stones.

quartz (tourmalinated)

Quartz (Tourmalinated)

Rare specimens of clear quartz have needle-shaped inclusions of tourmaline. These can be used to cut interesting and attractive cabochons and faceted stones.

rainbow moonstone

Rainbow Moonstone

Rainbow moonstone is a variety of moonstone that displays an electric blue or multicolor adularescence within a stone of colorless or white bodycolor.

red beryl

Red Beryl

Red beryl is an extremely rare gemstone colored by trace amounts of manganese. It is produced at one location in the world, the Ruby-Violet claims in Beaver County, Utah.

rhodolite garnet

Rhodolite Garnet

Rhodolite is a purplish red to violet-red variety of garnet that is a combination of pyrope and almandine. It often has wonderful color and clarity at a relatively low cost - and that is helping it become popular in jewelry.



Rhodochrosite is a manganese carbonate mineral that is popular because of its beautiful pink color. It typically has lacy or concentric bands. Its softness limits its use to earrings, pendants, pins, and other low-abrasion items.



Rhodonite is a manganese mineral that sometimes occurs in a very attractive pink color. Usually translucent to opaque, it is a popular gem material. Rarely, it is transparent and used for faceting.

rose quartz

Rose Quartz

Rose quartz is a translucent-to-transparent variety of quartz with a light to deep pink color. It is a gem material that is very common in nature. It is usually cut into cabs and occasionally faceted.



Ruby is the most popular colored stone. When the mineral known as corundum is of gem quality and a vivid red color, it is called "ruby." Historically mined in Asia, many rubies such as these are now being found in Africa.

ruby in fuchsite

Ruby in Fuchsite

Fuchsite is a metamorphic mica with a green color that often contains bright red corundum crystals or "rubies." It is often carved and cut into cabochons. Frequently confused with "ruby in zoisite."

ruby in zoisite

Ruby in Zoisite

Ruby in zoisite is an interesting material. Massive green zoisite often contains bright red ruby crystals. The color combination makes an attractive and unique gem material. It is often cut and carved into small sculptures.

sand dollar

Sand Dollar

Sand dollars found on beaches today are remains of a group of animals that has lived in the oceans for millions of years. Their bodies are often agatized by nature and then found by people who polish them into gems.



Sapphire is a gem variety of the mineral corundum. When it is reddish blue to violet-blue, it is known simply as "sapphire." Corundums of any other color (except red, which is ruby) are known as "fancy sapphires."

star sapphire

Sapphire, Star

Star sapphire contains elongated crystals of rutile aligned in three different directions that cause a properly cut stone to display a six-ray star. This phenomenon is known as "asterism."



Sardonyx is a member of the chalcedony family. It is a banded agate that contains bands of bright red alternating with agate of other colors.



Scapolite is a metamorphic mineral that sometimes occurs in transparent gem-quality crystals that make beautiful faceted gems. Some specimens contain a silk that can produce a strong cat's-eye.

scapolite (cat's-eye)

Scapolite (Cat's-Eye)

Cat's-eye scapolite is a gem-quality scapolite with a silk of parallel mineral fibers. When cut as a cabochon, light striking the stone reflects from the mineral silk to produce an "eye" that moves across the stone.



"Septarian" is a name used for round concretions with internal mineral-filled fractures found in sedimentary rocks. They are often cut into cabochons that display the interesting geometry of the fracture network.



Seraphinite is a trade name used for a gem material composed of the mineral clinochlore. It is usually greenish in color and marked with fibrous or feather-like patterns. Its hardness is only 3 to 4 and is reserved for delicate use.



A silicate mineral that occurs in a wide range of green and greenish colors with interesting patterns. Serpentine is often cut into cabochons or used as an ornamental stone.



Siderite is an iron carbonate mineral with a very high dispersion. Transparent crystals of siderite with great clarity can be cut into attractive gemstones with a strong fire. It is too soft for most jewelry and is a collector's stone.

sillimanite (cat's-eye)

Sillimanite (Cat's-Eye)

Sillimanite is a metamorphic mineral that often has a fine fibrous silk. When properly cut, cabochons of the material can reflect a sharp cat's-eye.

silver ore

Silver Ore

Silver is a precious metal that is often present as visible crystals in its ore. Some people enjoy seeing the bright metal reflecting from the surface of a cabochon. It is a novelty gem.



Smithsonite is a zinc carbonate mineral that serves as a minor ore of zinc and as a minor gem mineral. It is relatively soft and used as a collector's gem and in jewelry that is unlikely to receive abrasion or impact.

smoky quartz

Smoky Quartz

Smoky quartz is a grayish brown to nearly black variety of transparent quartz. It is often cut as a faceted stone or cabochon. Upon heating, it will sometimes change in color to yellow or yellowish brown citrine.



A feldspathoid mineral that ranges in color from white to blue to violet blue. It is often used to make cabochons, tumbled stones, and other lapidary projects.

Sonora Sunrise

Sonora Sunrise

Sonora Sunrise is a trade name for an eye-catching red and green gem material. It occurs naturally as a rock composed mainly of bluish-green chrysocolla and bright red cuprite.



Some specimens of gem-quality labradorite have exceptional color and labradorescence. These unusual gems are given the name "spectrolite" because of the spectrum of colors that they reflect.

spessartine garnet

Spessartine Garnet

Spessartine is also known as "spessartite" or as "mandarin garnet" because of its yellow-orange to orange-red color. It is a popular variety of garnet used in jewelry.



With a dispersion that is 3x that of diamond, sphalerite can be a very attractive faceted stone. It is popular with collectors but has very limited jewelry use because of its very low hardness (3.5 to 4) and perfect cleavage.



Sphene, also known as titanite, is a gem with a dispersion higher than diamond. Specimens of high clarity can be cut into gems with a brilliant fire. Its softness limits its use to earrings, pins, pendants, and low-abrasion jewelry pieces.



A mineral of many colors that has been treasured as a gem for thousands of years. It was often confused with ruby and sapphire. Many of these errors were not discovered until the 20th century.



Sugilite is a rare silicate mineral only discovered in 1944. It occurs in yellow, brown, pink, and purple and is often combined with quartz. The purple color has become very popular in the lapidary trade. Its high price limits its popularity.



A plagioclase feldspar that can be a colorful transparent gem. It can also contain plate-shaped copper inclusions that produce an aventurescent flash when moved under incident light. These specimens are from Oregon.



Tanzanite is a rare and popular blue variety of zoisite produced from a small location in the African country of Tanzania. It is a birthstone for the month of December and is an alternative stone for blue sapphire.



Tektites are fragments of ejecta produced when an asteroid struck Earth about 800,000 years ago. The impact melted the target rock and scattered a black glass in a strewn field across southeastern Asia.



Thulite is a rare, pink, gem-quality variety of zoisite. It can be cut into beautiful cabochons, beads, small sculptures, and other lapidary items.



Tiger's-eye is a material that forms when quartz replaces crocidolite. When it is cut into a cabochon with its fibrous structure parallel to the bottom of the stone, a chatoyance, or cat's-eye effect, is produced.

tiger iron

Tiger Iron

Tiger iron is a rock composed of alternating bands of silver hematite, gold tiger's-eye, and red jasper. It is cut into attractive and interesting cabochons, beads, spheres, and other lapidary items.

Tiffany stone

Tiffany Stone

Also known as "bertrandite," Tiffany stone is a beautiful material that is thought to be an opalized fluorite. Found at one beryllium mine site in Utah.



Topaz is a popular gem. It is usually clear to amber in color when mined. It can be heated, coated, or irradiated to produce other colors that include "Swiss blue," "London blue," bright pink, and soft pink.



Tourmaline is a silicate mineral that occurs in a wide range of attractive colors. It is a very durable gem material that is popular with jewelry makers.

tourmaline (bicolor)

Tourmaline (Bicolor)

When tourmaline crystals grow, the composition of their growth fluid can change. Color-zoned crystals might be the result. These crystals can be cut into interesting bicolor stones. Some are known as watermelon.   :-)

tsavorite garnet

Tsavorite Garnet

Tsavorite is a calcium-rich garnet known for its brilliant green color. It sometimes serves as an alternative stone to emerald. It is the most important green garnet and one of the rarest and most valuable colored stones.



A copper mineral with a bright blue to blue-green color. The color is so familiar and liked that the word "turquoise" is used in the English language as the name of a color. Only a few gems have a color this familiar.


Turritella Agate

Decades ago, this agate was named "Turritella" after the fossil snails that it contains. That name is incorrect because the snails were misidentified. The proper name should be "Elimia agate" after the snail Elimia tenera.



Unakite is an igneous rock that contains green epidote and pink orthoclase feldspar. It can be coarse or fine grained. It is popular as cabochons, beads, and small sculptures.



A mineral that is similar to turquoise in mode of formation and composition. It even looks like turquoise but in a blue-green to yellowish green color. Cut into cabochons, but its use is limited because it is soft (H: 4.5).



Vesuvianite is a mineral formed by the contact metamorphism of limestone. It is often an attractive translucent green color that reminds people of jade. Rare transparent crystals are faceted. Named after Mt. Vesuvius.

white opal

White Opal

"Light opal" or "white opal" are terms used for an opal material with a white, yellow, or cream-colored body color. This is the most common body color for precious opal. There are many types of opal.



Zircon is a hard, durable gem that occurs in a variety of colors. Its brightness and fire rivals those of diamond. Colorless zircon was once used as a popular and fraudulent alternative to diamond.

Gemstones of the World

Gemstones of the World

We highly recommend Gemstones of the World by Walter Schumann. It is one of the most popular gemstone books ever written, with over one million copies sold. It has about 100 pages of basic gemstone information and about 200 pages dedicated to photos and descriptions of over 100 gems and gem materials. It is a well-illustrated book for the beginner and contains essential reference material for anyone with an interest in gems.

Sours: https://geology.com/gemstones/gems/
Polishing an Essential Stone with the JOOLTOOL

Australian gems


Australia, with its long geological history, has some of the world’s oldest rocks and minerals and a wide variety of gemstones. Australia is the world’s biggest producer of diamonds and opals and major supplier of sapphire, ruby,emerald, garnet, topaz and jade has also been mined in Australia. Information on some of Australia's gemstones can be found at Google Arts and Culture - Gems from the Safe.

The test of a good gemstone is its resistance to wear and tear. Using properties of minerals such as habit, shape, lustre, light refraction and specific gravity we can tell the difference between similar looking gemstones. Most gemstones are harder than quartz (Mohs scale greater than 7) and cannot be scratched by the blade of a knife. For example, diamond has a specific gravity of 3.52 and a cubic zirconia, which looks very similar, has a specific gravity of 5.80. This means that cubic zirconium is heavier than diamond. A two carat diamond is larger than a two carat cubic zirconia and very much more expensive.

Map of Australia showing major gemstone occurrences and mines.

Gemstone occurrences and mines in Australia. Source: Geoscience Australia

Precious, semi-precious or ornamental stones

In the mid-1800s, gemstones were first classified as either ’precious’ or ‘semi-precious’. However, these divisions are not scientific and have never been truly meaningful. Diamonds, rubies, sapphires, and emeralds were originally considered the ‘precious stones’, but sometimes this category included opal, jade, or pearls. Gemstones that were referred to as semi-precious are used in jewellery and ornaments. These include:

agatechalcedonyhematitelapis lazuliperidottanzanite
aventurinegarnetkunziteonyxtiger’s eye

Some Australian examples of these gems can be seen at Google Arts and Culture - Gems from the Safe.

Purple, cone shaped, cut amethyst gemstone.

Faceted amethyst. R30715. Source: Geoscience Australia

Many people in the gem and jewellery industry do not like the terms precious and semi-precious, because they do not take into account the grade of the gemstone. Precious gemstones are not always rarer or more valuable, than semi-precious gemstones. Gemmologists use grade as a general measure of gemstone quality, using the 4Cs (clarity, colour, cut, and carat) to determine the potential price.

The 'beauty' of a gemstone is evaluated by examining how light is transmitted or refracted through the gem or reflected from the gem's surface. A gem can be coloured or have changing colour patterns, differing levels of transparency, lustre and brilliance. In addition, in some gems there is dispersion of light or 'fire'. Some of these properties are qualitative, so can be described rather than measured; and some are quantitative and can be measured using appropriate optical instruments.

Another term sometimes used is ‘ornamental gemstone’. This term is used to describe minerals that lack transparency, but have attractive colours, textures and patterns such as jade, malachite, chalcedony and lapis lazuli. They are not all rare, and most have a hardness of less than 7 on Moh’s scale.

The 4 Cs for gemstones

Gemstones are valued according to four different criteria: clarity, colour, cut and carat (weight or size).

  • Clarity is the quality most prized in gemstones. A perfect gemstone is a flawless, transparent crystal that sparkles brilliantly as it reflects light internally. Sometimes crystals contain inclusions which are impurities that distort the appearance of the gemstone. Some gemstones, such as star sapphires, pink diamonds and rutilated quartz are valued even more because of these inclusions. Inclusions can be used to identify if a gemstone is naturally formed or synthetically made. Clarity ranges from internally flawless to imperfect.
  • Bright and intense colour will increase the value of a gemstone. Colourless beryl is only moderately valued, but emerald (green beryl) is one of the world’s most valued stones. Jade, turquoise and lapis lazuli have rich green and blue colours making them hugely sought after. Many gemstones acquire their colours due to their chemical composition and trace elements or impurities contained in the stones. Peridot (gemstone olivine) is commonly green due to its chemical composition, but can vary from pale lemon to dark olive green. Colourless diamonds are usually the most highly valued, however, diamonds tinted blue or pink from impurities are sometimes more valuable because they are so rare; many of the diamonds from the Argyle diamond mine in Western Australia are pink or champagne coloured, increasing their value.
  • Most gemstones which are used for jewellery have been cut or faceted. If cut incorrectly gemstones will have less sparkle and consequently be poorer quality.
  • The term carat refers to the weight of a gemstone. One carat = 200 milligrams (1/5 of a gram).


Unusual geological conditions are required to create gemstones, which is why they are so rare. Gemstones are often found in igneous rocks. Pegmatite, an intrusive igneous rock, may concentrate rare minerals to form gemstones such as beryl, ruby, sapphire, tourmaline and topaz. Intense metamorphism may create garnet, emerald, jade and lapis lazuli.


BasaltDark coloured, fine-grained volcanic igneous rock, low in silica content, composed largely pyroxene, and olivine and feldspar.
BirefringenceThe splitting of a single ray of light into two rays (also referred to as double refraction). Birefringent gemstones have two different refractive indices; this makes the optical phenomenon very useful for gemstone dealers to correctly identify certain man-made fakes from real gemstones.
CaratThe mass of a gemstone. One carat = 200 milligrams (1/5 of a gram).
CrystalA solid mineral enclosed by symmetrically arranged planes.
Crystal shapeThe shape that a crystallising mineral will take reflects the internal arrangement of its atoms and molecules.
Crystal structureThe arrangement of atoms or molecules in a material, creating a lattice exhibiting order and symmetry.
CrystallineHaving the structure and form of a crystal.
CrystallisationThe process by which crystals are formed.
ElementA pure chemical substance consisting of a single type of atom distinguished by its atomic number which is the number of protons in its atomic nucleus.
FacetedWhen a crystal is cut with flat surfaces, it is said to be faceted.
FluorescenceEmission of vissible light whem a mineral is exposed to radiation such as ultraviolet light or X-rays.
GrainsParticles of sediment ranging in size from tiny bits of clay to sand to enormous boulders. Sediments can be transported then deposited by water, wind or ice and this will wear the grains down to smaller sizes.
GraniteCommon igneous rock usually composed of the minerals quartz, feldspar and biotite mica or hornblende. Granite is made of large crystals that grew slowly as magma cooled deep underground.
LustreDescribes how light is reflected from a mineral’s surface (reflectivity).
MagmaMolten rock.
MetamorphismThe process of one rock changing to another rock because of heat and/or pressure.
MicaA silicate mineral containing iron and magnesium. It forms flat sheets and has a shiny appearance and can be black or colourless.
MineralA naturally occurring, inorganic, substance with a reasonably fixed chemical composition and crystalline structure. Minerals usually have a crystalline form but not all crystals are made of rock-forming minerals (e.g. sugar).
MoleculeContains a number of atoms held together by bonds and are the smallest complete unit of a substance i.e. an individual molecule of water contains three separate atoms held together by two bonds.
PhosphorescenceThe emission of visible light for some time after the stimulating radiation causing fluorescence has been turned off.
QuartzA relatively hard mineral made of silica (SiO2) and typically occurring as colourless or white hexagonal prisms. It is often coloured by impurities.
RecrystalliseA metamorphic process that occurs under situations of intense temperature and pressure where grains, atoms or molecules of a rock or mineral are packed closer together, creating a new crystal structure. The basic composition remains the same.
RefractionThe bending of light as it travels through materials with different densities.
RockNaturally occurring, solid aggregate of one or more minerals, or mineraloids. For example, the common rock granite is a combination of quartz, feldspar and biotite or amphibole minerals.
SedimentNaturally occurring material that is broken down by processes of weathering and erosion, and is then transported by the action of wind, water, or ice, consisting or rock or mineral particles.
SheenA special visual effect observed in gems due to reflection of light from the internal structure of the stone.
StreakThe colour of powered mineral, often found by scratching the mineral on an unglazed white tile.
VolcanicIgneous rocks that have formed from products of volcanic activity such as lava.
WeatheringThis is the process in which the texture and composition of rocks, sediments and regolith change after being exposed at or near the Earth’s surface to weathering agents such as water, oxygen, organic acids and large temperature fluctuations. Weathering can be chemical or physical (mechanical) and includes changes by the effects of gravity, the atmosphere, the hydrosphere and/or the biosphere at normal temperatures and pressures.
Sours: https://www.ga.gov.au/education/classroom-resources/minerals-energy/australian-mineral-facts/australian-gems

Jewelry stone ocean picture

Every bit of information was from her memory. No, I didn't think so, "he replied, confused. Your room is not as messy as you think.

Beautiful, Rare, and VERY Valuable! (BC Ocean Picture Stone)

And how much is needed for a guy who is in forced abstinence. His good mood was not even spoiled by the information received from the girls that an object approaching the planet could pose. A real threat.

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From time to time we broke away from each other, smoked a cigarette and again, an irresistible force pulled us together into one whole. "Do you like me?" - asked Natasha. "I like it !!!" - I answered and planted her in the balls. "O-hooo-hoo!" - the woman sobbed and a grimace of unearthly pleasure distorted her face.

"Do you love me?" - Natka asked through tears after some time.

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