Olmiite

N Chwanning II Mine, Kuruman, Republic of South Africa

Tourmaline Var. Elbaite

Kunar Province, Afganistan

Acanthite

Imiter, Atlas Mountains, Morocco

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Zoisite Var. Tanzanite

Arusha, Merelani, Tanzania

Danburite rough and cut

San Luis Potosi, Mexico