Danburite: Rough and Cut

Charcas, San Luis Potosi, Mexico

Lapis Lazuli (polished and carved)

Sar-e-Sang, Badakhshan Province, Afghanistan

Olmiite on matrix

N Chwanning II Mine, Kuruman, Republic of South Africa

Olmiite on Calcite

N Chwanning II Mine, Kuruman, Republic of South Africa

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Wulfenite

Wulfenite from Villa Ahumada, Sierra de Los Lamentos, Chihuahua, Mexico