Enargite 1.51 ct Trillion Cut 6.60 x 6.50 mm w507

Description

Enargite 1.51 ct Trillion Cut 6.60 x 6.50 mm w507

Enargite

Enargite is a copper arsenic sulfosalt mineral with formula: Cu3AsS4. It takes its name from the Greek word enarge, “distinct.” Enargite is a steel gray, blackish gray, to violet black mineral with metallic luster. It forms slender orthorhombic prisms as well as massive aggregates. It has a hardness of 3 and a specific gravity of 4.45.

This mineral is brittle and it has often small cavities that may be seen on surface of the stone.

From San Francisco vein, Junin Department, Peru.