Olmiite

N Chwanning II Mine, Kuruman, Republic of South Africa

Danburite: Rough and Cut

Charcas, San Luis Potosi, Mexico

Acanthite

Imiter, Atlas Mountains, Morocco

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Zoisite Var. Tanzanite

Merelani Mine, Lelatema Mountains, Arusha Region, Tanzania

Adamite on Limonite

Ojuela Mine, Mapimi, Durango, Mexico