Calaverite
3.14 ct
Trillion Cut
12.00 x 11.60 x 4.70 mm
Colorado,
USA
max9433b

Calaverite カラベライト

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