Colored Stones: Photos of beautiful colored stones from around the world.
Organic Gems are gems formed from or by plants or animals. They might also be fossils.
||Ruby and Sapphire
Ruby & Sapphire are gem corundums - ruby when red, sapphire when other colors.
Chrysoberyl: an extreme gem. Its hardness is 8.5, can display chatoyance or color-change.
Pictures of Opal: A collection of different types of opal from all around the world and Mars too!
||All About Diamonds
Diamond a collection of photos, articles, facts, maps and graphs about diamonds.
Topaz is a popular birthstone and the #8 mineral in the Mohs Hardness Scale.
Labradorite is a feldspar gem that can produce bright flashes of iridescent color.
Fee Mining sites are mines that you can enter, pay a fee, and keep anything that you find.
||What Is Jade?
Jade has been used as a gemstone and a tool-making material for for 1000s of years.
||US Diamond Mines
US Diamond Mines: Where are diamonds mined in the United States?
Diamonds Do Not Form From Coal: Learn several reasons why the coal origin is false.
|Amazing Agate Photos
Beautiful Agates: A gallery of spectacular agate photos and descriptions by Richard Weston.
Spinel: The gemstone that was confused with ruby and sapphire for over 1000 years.
Anthill Garnets are tiny garnets that ants haul to the surface and discard on their anthill. Honest!
Sunstone: A feldspar with aventurescence caused by tiny copper inclusions.
United States Gemstones: Small mines in the U.S. produce a diversity of gemstones.
Rock Tumblers are machines that slowly turn rough rock into beautiful gemstones.
Ammolite is a fossil and a gemstone. It is shell material from fossil ammonites.
||US Gem Production
U.S. Gemstone Production is very low compared to the U.S. being the largest consumer.
Malachite has served as a gem material, pigment and ore of copper for thousands of years.
You Can Be A Diamond Miner! At the Crater of Diamonds mine you can keep what you find.
Turquoise: A blue to bluish- green gem material that has been used for over 6000 years.
Kyanite is a metamorphic mineral that sometimes has a gemmy transparent blue color.
Blood Diamonds: Illegally-traded diamonds that may have been stolen or used to fund conflict.
Spodumene is an ore of lithium and the mineral of the gems kunzite and hiddenite.
||Facts About Diamonds
Facts About Diamonds: You are a diamond expert if you know all of these!
Ametrine is a bicolor quartz (amethyst + citrine) and a gemstone of growing popularity.
Synthetic Diamonds of spectacular quality are now being produced in labs.
Fire Opal is a transparent to translucent opal with a yellow, orange or red background color.
Cabochons: A photo gallery of cabochon gemstones from around the world.
Iris Agate can produce a rainbow of colors when light passes between its thin bands.
Tectonic History In Jade: Dates of metamorphism and fault motion are locked in jade.
Diamonds are mined in many countries and their relative importance changes frequently.