Calaverite カラベライト 2.22 ct Trillion Cut 9.00 x 9.00 x 5.00 mm Colorado, USA max9459
Calaverite a Rare Gold Telluride mixed into chalcedony/granite matrix.
The formula is (AuTe2). Small quantity of silver may also be found.
It comes from Cripple Creek Mining District, Teller County, Colorado, USA