This is a colorless Topaz crystal nearly flawless inside found by Mikes mining partner on thier claim. 193.5 carats(38.7 grams). Found February of 2015.

Mohs hardness: 8

Colorado Topaz - pictures in the CP forums.

From Wikipedia - Topaz

"Topaz is a silicate mineral of aluminium and fluorine with the chemical formula Al2SiO4(F,OH)2. Topaz crystallizes in the orthorhombic system, and its crystals are mostly prismatic terminated by pyramidal and other faces."

Check out the Mindat.org database for detailed information about Topaz.

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