Wyoming – The Gemstone State.

Gem-quality pyrope garnet faceted from rough collected at ButcherknifeDraw near Green River, Wyoming. Colored gemstones were almost unheard of in Wyoming prior to 1977 other than some fabulous cobbles and…

Geology of Gemstone Deposits

Large chlorite pseudomorph after garnet found in the Sierra Madre Mountains, Wyoming. The chlorite slowly replacedthe garnet and accepted the garnet’s crystal form.  Much of Wyoming is underlain by Archean…

OTHER GEMS

During 30 years at the WGS, I found hundreds of deposits. How did I do this? I used geology as a guide; I looked at things differently and was motivated…

IOLITE (WATER SAPPHIRE)

A 16-carat iolite from Palmer Canyon, Wyoming. I discovered iolite (water sapphire) at Palmer Canyon in 1995. The iolite occurred with gem-quality kyanite in mica schist & gneiss adjacent to…

PERIDOT

In 1997, I decided to search the Leucite Hills in western Wyoming for diamonds (see photo at left). I didn’t find diamonds, but mark my words – “DIAMONDS WILL BE…

GEMSTONES & GEOLOGY

A good understanding of geology, persistence & some luck can lead to incredible treasures. In 1977, I started work as a research geologist at the Wyoming Geological Survey in Laramie.…

Major Diamond and Colored Gemstone Deposits Found in US

MAJOR DIAMOND PROVINCE DISCOVEREDsee GEMHUNTER See also http://DiamondProspector.webs.com State Line Kimberlite Province showing locations of (1) Radichal kimberlite &Mineral Indicator Anomalies, (2) the Iron Mountain kimberlite district, (3) Schaffer, Aultman, Ferris…