Adamite on Limonite

Ojuela Mine, Mapimi, Durango, Mexico

Quartz, var. Herkimer Diamond

Ace of Diamonds Mine, Herkimer County, New York

Olmiite on Calcite

N Chwanning II Mine, Kuruman, Republic of South Africa

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Zoisite Var. Tanzanite

Merelani Mine, Lelatema Mountains, Arusha Region, Tanzania

Tourmaline Var. Elbaite

Kunar Province, Afganistan