Acanthite

Imiter, Atlas Mountains, Morocco

Zoisite Var. Tanzanite

Arusha, Merelani, Tanzania

Zoisite Var. Tanzanite

Arusha, Merelani, Tanzania

Opal (rough and cut)

Shoa Province, Ethiopia

Danburite rough and cut

San Luis Potosi, Mexico

Corundum var. Sapphire

Potanino Mine, Ilmen Mountains, Russia