Prior to 1975, only jade and a few agates were known in Wyoming. But from 1975 to 2007, Wyoming became known as the gem capital of North America and now has a very impressive list of gemstones and the widest diverse collection of documented gems of any state in the US. A few are considered world-class and have yielded some of the largest gemstones in the world. The collection of gems in Wyoming now include agate, jasper, common opal, fire opal, precious opal, onyx, gold nuggets, Cape Ruby (pyrope garnet), spessartine garnet, Cape Emerald (chrome diopside), chrome enstatite, kyanite, iolite, ruby, sapphire, peridot, diamond, specularite, apatite, minyulite, amethyst, aquamarine, jade, almandine, chalcedony, silicified banded iron formation, jasperoid, labradorite, grunerite, amber, chrysocolla, heliodor, varisite and others (Hausel, 2008c; Hausel and Sutherland, 2000, 2006).
Our 2009 book, 'Gems, Minerals and Rocks of Wyoming' describes many of the minerals, gems and rocks found in Wyoming and will give you a start on this fun and potentially profitable hobby.
We just finished a book on gold (2011) which will tell you exactly where to go to find dozens and dozens of gold deposits. Find it at Amazon. Don't get left behind! This 366 page book tells it all!
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