|Gems from Space
Extraterrestrial Gems A number of materials from space are used as attractive gems.
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
Pictures of Opal A collection of different types of opal from all around the world and Mars too!
||Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
United States Gemstones Small mines in the U.S. produce a diversity of gemstones.
Emerald is the most popular green gemstone in the United States and most of the world.
||All About Diamonds
Diamond a collection of photos, articles, facts, maps and graphs about diamonds.
Labradorite is a feldspar gem that can produce bright flashes of iridescent color.
Lapis Lazuli - a metamorphic rock and the most popular blue opaque gemstone in history.
Tanzanite was unknown until a few decades ago but it has erupted into wide popularity.
Turquoise A blue to bluish- green gem material that has been used for over 6000 years.
Strontium Titanate is a man-made diamond simulant with a fire much stronger than diamond.
Fee Mining sites are mines that you can enter, pay a fee, and keep anything that you find.
Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
Aventurine is translucent quartz with tiny reflective inclusions that produce aventurescence.
Gemstones of the World : A book by Robert Schumann. Over one million copies sold.
|Ruby and Sapphire
Ruby & Sapphire are gem corundums - ruby when red, sapphire when other colors.
Topaz is a popular birthstone and the #8 mineral in the Mohs Hardness Scale.
||Ant Hill Garnets
Ant Hill Garnets are tiny garnets that ants haul to the surface and discard on their anthill. Honest!
Bloodstone is a dark green jasper with a splatter of red color that looks like blood.
|What Is Jade?
Jade has been used as a gemstone and a tool-making material for for 1000s of years.
Spinel The gemstone that was confused with ruby and sapphire for over 1000 years.
Organic Gems are gems formed from or by plants or animals. They might also be fossils.
||US Diamond Mines
US Diamond Mines Where are diamonds mined in the United States?
Cabochons A photo gallery of cabochon gemstones from around the world.
Blood Diamonds Illegally-traded diamonds that may have been stolen or used to fund conflict.
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
||Amazing Agate Photos
Beautiful Agates A gallery of spectacular agate photos and descriptions by Richard Weston.
|Polka Dot Agate
Polka Dot Agate is a translucent blue to white agate with a suspension of colorful dots.
Petrified Wood is a fossilized wood that often serves as a colorful gem material.
Peridot is the gem variety of olivine. Derived from the mantle and rarely from meteorites.
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Sunstone A feldspar with aventurescence caused by tiny copper inclusions.
Rock Tumblers are machines that slowly turn rough rock into beautiful gemstones.
Rose Quartz is the name used for specimens of translucent quartz with a pink color.
Jet is a black organic gem material that forms from well-preserved woody material.
Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity.
Diamonds Do Not Form From Coal Learn several reasons why the coal origin is false.
Smoky Quartz - A brown color-variety of the mineral quartz often cut as a gem.
You Can Be A Diamond Miner! At the Crater of Diamonds mine you can keep what you find.
Malachite has served as a gem material, pigment and ore of copper for thousands of years.
Kyanite is a metamorphic mineral that sometimes has a gemmy transparent blue color.
Star Garnets are found in only a few locations worldwide. They are the state gems of Idaho.
Rhodonite is a pink manganese silicate used as a gemstone, an ornamental stone and an ore.
Rhodochrosite : a manganese mineral used as an ore, a pink gem and an ornamental stone.
Zoisite is a diverse gem. Tanzanite, thulite and anyolite are three of its gem varieties.
Azurmalachite is a mixture of malachite and azurite. It can be a beautiful blue and green gem.
||Facts About Diamonds
Facts About Diamonds You are a diamond expert if you know all of these!
Chrysoberyl an extreme gem. Its hardness is 8.5, can display chatoyance or color-change.
Diamonds are mined in many countries and their relative importance changes frequently.
Scapolite can be a pretty faceted stone or a translucent cab with cats eye and iris effects.
Iolite is the gem variety of the mineral cordierite. An alternative to sapphire and tanzanite.
Spodumene is an ore of lithium and the mineral of the gems kunzite and hiddenite.
Synthetic Diamonds of spectacular quality are now being produced in labs.
Helenite is a man-made glass produced by fusing ash from the 1980 Mount St. Helens eruption.
||US Gem Production
U.S. Gemstone Production is very low compared to the U.S. being the largest consumer.
Turritella Agate is a brown agate containing snail fossils from the Green River Formation.
Iris Agate can produce a rainbow of colors when light passes between its thin bands.
Peanut Wood? Yes! It is a very interesting gem material found in Western Australia.
Chatoyant Gems look like the eye of a cat. They have a line of light that moves across the gem.
Petrified Palm is often confused with petrified wood, but it is a distinctly different material.
Andalusite is a gem that exhibits strong pleochroism and often has sets of oriented inclusions.
K2 Granite is a white granite with blue orbs of azurite. It is a new gem material from Pakistan.