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Tag: cordierite

OPAL

A rockhound from Riverton mentioned opal south of town. The Cedar Ridge deposit lies along the highway & is cut by numerous oil field roads, no one had recognized that this place had one of the largest opal deposits on earth! A few old geological reports from 50 years ago briefly mentioned opal, so I

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 vermiculite that had enough silica to form these gems. I couldn’t believe the amount, size & beauty of the stones. The single, largest, iolite gemstone