Opal var. Hyalite San Luis Potosi, Mexico |
Lapis Lazuli (polished and carved) Sar-e-Sang, Badakhshan Province, Afghanistan |
Wulfenite Wulfenite from Villa Ahumada, Sierra de Los Lamentos, Chihuahua, Mexico |
Olmiite on Calcite N Chwanning II Mine, Kuruman, Republic of South Africa |
Tourmaline var. Uvite with Magnesite and Quartz Brumado, Bahia, Northeast Region, Brazil |
Corundum Var. Sapphire Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka |