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Gemstone.org - International Colored Gemstone Association

Opal Auctions is the number one site to buy and sell opals & opal jewelry online. Registration is free for all, and we stock a wide variety of quality opals and related gemstones

The Jet Propulsion Laboratory is the lead U.S. center for robotic exploration of the solar system, and conducts major programs in space-based Earth sciences and astronomy. JPL spacecraft have visited all of the planets from Mercury to Neptune.

Geology and Earth Science current events, news, articles, dictionary, satellite images, career information, reference maps, and more.

Buy Gemstones Online. Loose Semi-Precious and Precious Stones: Sapphire, Spinel, Topaz, Garnet, Tourmaline, Opal, Emerald, Ruby, Amethyst and Birthstones

The Gemological Institute of America, GIA, is the world

austin restaurants bar & pub Opal Divines boast huge patio decks at all three austin locations. A full service bar and brand new american food menu. north, south and just a few blocks from downtown on west 6th street.

The Opal Man is a professional opal cutter and supplier of gem opals to the world.

Amethyst Galleries

The Royal Peacock Mining Company in Northwest Nevada produces some of the world