Calaverite 0.99 ct Cushion Cut 7.00 x 6.10 x 4.00 mm Colorado, USA max9433

Calaverite
0.99 ct
Cushion Cut
7.00 x 6.10 x 4.00 mm
Colorado,
USA
max9433

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