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Gemstones

100+ Gemsgem photos 100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure. Geology of GemsGeology of Gems Geology of Gems - The first comprehensive book on the geology of gem deposits. Gems from SpaceGems from Space Extraterrestrial Gems A number of materials from space are used as attractive gems. Blue Gemstonesblue gemstones Blue Gemstones - Most people shopping for a colored stone are looking for something blue.
Ruby and SapphireRuby and Sapphire Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States. All About DiamondsDiamond Diamond A collection of photos, articles, facts, maps and graphs about diamonds. Opal PhotosOpal Pictures of Opal A collection of different types of opal from all around the world and Mars too! Green GemstonesGreen Gemstones Green Gemstones - emerald, peridot, jade, tsavorite, chrome diopside, chrysoprase, more.
Emeraldemerald Emerald is the most popular green gemstone in the United States and most of the world. LabradoriteLabradorite Labradorite is a feldspar gem that can produce bright flashes of iridescent color. Tanzanitetanzanite Tanzanite was unknown until a few decades ago but it has erupted into wide popularity. TurquoiseTurquoise Turquoise A blue to bluish- green gem material that has been used for over 6000 years.
U.S. GemstonesU.S. Gemstones United States Gemstones Small mines in the U.S. produce a diversity of gemstones. Gem MineralsGem Mineral Collections Gem Mineral Collections are a great way to learn about gem materials. Get yours. TopazTopaz Topaz is a popular birthstone and the #8 mineral in the Mohs Hardness Scale. AmmoliteAmmolite Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
Gemstone BookGemstones of the World Gemstones of the World : A book by Robert Schumann. Over one million copies sold. Strontium Titanatestrontium titanate Strontium Titanate - lab created diamond simulant with fire much stronger than diamond. Ant Hill GarnetsAnt Hill Garnets Ant Hill Garnets are tiny garnets that ants haul to the surface and discard on their anthill. Honest! Fee MiningFee Mining Fee Mining sites are mines that you can enter, pay a fee, and keep anything that you find.
GarnetGarnet Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses. PeridotPeridot Peridot is the gem variety of olivine. Derived from the mantle and rarely from meteorites. Lapis Lazulilapis lazuli Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history. SpinelSpinel Spinel The gemstone that was confused with ruby and sapphire for over 1000 years.
Ruby and SapphireRuby and Sapphire Ruby & Sapphire are gem corundums - ruby when red, sapphire when other colors. What Is Jade?Jade Jade has been used as a gemstone and a tool-making material for for 1000s of years. Rock Tumblingrock tumblers Rock Tumblers - All about rock tumblers and rock tumbling. Read before you buy a tumbler. Fire OpalFire Opal Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
SunstoneSunstone Sunstone A feldspar with aventurescence caused by tiny copper inclusions. Gem SilicaGem Silica Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony. Star GarnetStar Garnet Star Garnets are found in only a few locations worldwide. They are the state gems of Idaho. MalachiteMalachite Malachite has served as a gem material, pigment and ore of copper for thousands of years.
Blood DiamondsBlood Diamonds Blood Diamonds Illegally-traded diamonds that may have been stolen or used to fund conflict. Gem BerylGem Beryl Beryl - the mineral of emerald, aquamarine, morganite, heliodor, goshenite, and more. AmetrineAmetrine Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity. Organic GemsOrganic Gems Organic Gems are gems formed from or by plants or animals. They might also be fossils.
Azurmalachiteazurmalachite Azurmalachite is a mixture of malachite and azurite. It can be a beautiful blue and green gem. US Diamond MinesUnited States Diamond Mines US Diamond Mines Where are diamonds mined in the United States? Amazing Agate PhotosAgates Beautiful Agates A gallery of spectacular agate photos and descriptions by Richard Weston. Biggest MisconceptionDiamonds from Coal Diamonds Do Not Form From Coal Learn several reasons why the coal origin is false.
Petrified WoodPetrified Wood Petrified Wood is a fossilized wood that often serves as a colorful gem material. Bloodstonebloodstone Bloodstone is a dark green jasper with a splatter of red color that looks like blood. Rhodoniterhodonite Rhodonite is a pink manganese silicate used as a gemstone, an ornamental stone and an ore. Jetjet Jet is a black organic gem material that forms from well-preserved woody material.
ChrysopraseChrysoprase Chrysoprase - The translucent green variety of chalcedony that is colored by nickel. Rose QuartzRose Quartz Rose Quartz is the name used for specimens of translucent quartz with a pink color. Red BerylRed Beryl Red Beryl is one of the rarest gems. Small amounts are mined at one locality in Utah. KyaniteKyanite Kyanite is a metamorphic mineral that sometimes has a gemmy transparent blue color.
Arkansas DiamondsArkansas Diamonds You Can Be A Diamond Miner! At the Crater of Diamonds mine you can keep what you find. RhodochrositeRhodochrosite Rhodochrosite : a manganese mineral used as an ore, a pink gem and an ornamental stone. CabochonsCabochons Cabochons A photo gallery of cabochon gemstones from around the world. AventurineAventurine Aventurine is translucent quartz with tiny reflective inclusions that produce aventurescence.
AzuriteAzurite Azurite is a vivid blue copper mineral that can be cut into beautiful cabochon gems. Facts About DiamondsDiamond Facts Facts About Diamonds You are a diamond expert if you know all of these! Fancy SapphireFancy Sapphires Fancy Sapphires are gem corundums of any color other than red, blue or colorless. SpodumeneSpodumene Spodumene is an ore of lithium and the mineral of the gems kunzite and hiddenite.
BenitoiteBenitoite Benitoite - Geology of the State Gem of California - USGS report from 1911. IoliteIolite Iolite is the gem variety of the mineral cordierite. An alternative to sapphire and tanzanite. DiopsideChrome Diopside Chrome Diopside is a green gemstone that is often used as an alternative stone for emerald. Zoisitezoisite Zoisite is a diverse gem. Tanzanite, thulite and anyolite are three of its gem varieties.
ScapoliteScapolite Scapolite can be a pretty faceted stone or a translucent cab with cats eye and iris effects. UnakiteUnakite Unakite A gem material composed of green epidote and pink orthoclase. Iris AgateIris Agate Iris Agate can produce a rainbow of colors when light passes between its thin bands. SerpentineSerpentine Serpentine - a group of metamorphic minerals used as gems and architectural stone.
Maw Sit SitMaw Sit Sit Maw Sit Sit is a metamorphic rock and a gem material that was once thought be jade. ApatiteApatite Apatite produces gemstones with vivid colors and is popular with collectors. Chatoyant Gemscats eye gems Chatoyant Gems look like the eye of a cat. They have a line of light that moves across the gem. US Gem ProductionUS Gemstone Production U.S. Gemstone Production is very low compared to the U.S. being the largest consumer.
HeliodorHeliodor Heliodor is a yellow, greenish-yellow or golden yellow beryl used as a gem. Smoky QuartzSmoky quartz Smoky Quartz - A brown color-variety of the mineral quartz often cut as a gem. HeleniteHelenite Helenite is a man-made glass produced by fusing ash from the 1980 Mount St. Helens eruption. Diamond ProducersDiamond Producers Diamonds are mined in many countries and their relative importance changes frequently.
Titanite aka SpheneTitanite Titanite - also known as sphene, this mineral is a minor source of titanium and a minor gem. PrasiolitePrasiolite Prasiolite is amethyst that has been heat-treated to a leek-green color. Petrified PalmPetrified Palm Petrified Palm is often confused with petrified wood, but it is a distinctly different material. Synthetic DiamondsSynthetic Diamonds Synthetic Diamonds of spectacular quality are now being produced in labs.
Hardness PicksHardness Picks Hardness Picks - Mohs hardness testing with precise and easy-to-use hardness picks. AndalusiteAndalusite Andalusite is a gem that exhibits strong pleochroism and often has sets of oriented inclusions. Canadian DiamondsCanadian Diamonds Canadian Diamond Mines produce some of the largest and highest quality diamonds! Polka Dot AgatePolka Dot Agate Polka Dot Agate is a translucent blue to white agate with a suspension of colorful dots.
Chrysoberylchrysoberyl Chrysoberyl an extreme gem. Its hardness is 8.5, can display chatoyance or color-change. Peanut Wood?Peanut Wood Peanut Wood? Yes! It is a very interesting gem material found in Western Australia. K2 GraniteK2 Granite - aka K2 Jasper K2 Granite is a white granite with blue orbs of azurite. It is a new gem material from Pakistan. Turritella AgateTurritella Agate Turritella Agate is a brown agate containing snail fossils from the Green River Formation.
       

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