Opal var. Hyalite San Luis Potosi, Mexico |
Adamite on Limonite Ojuela Mine, Mapimi, Durango, Mexico |
Corundum Var. Sapphire Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka |
Quartz Var. Rose Lavra da Ilha Pegmatite, Taquaral, Itinga, Aracuai, Minas Gerais, Brazil |
Olmiite on Calcite N Chwanning II Mine, Kuruman, Republic of South Africa |
Tourmaline var. Uvite with Magnesite and Quartz Brumado, Bahia, Northeast Region, Brazil |