Danburite rough and cut San Luis Potosi, Mexico |
Corundum Var. Sapphire Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka |
Opal (polished) Jalisco, Mexico |
Sphalerite on Quartz Shuikoushan Lead/Zinc Mine, Chaling, Hunan Province, China |
Opal (rough and cut) Shoa Province, Ethiopia |
Quartz Var. Rose Lavra da Ilha Pegmatite, Taquaral, Itinga, Aracuai, Minas Gerais, Brazil |