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 Potanino Mine, Ilmen Mountains, Russia |
Beryl var. Aquamarine (etched) Itatia Mine, Minas Gerais, Brazil |
Opal: Rough and Cut Shoa Province, Ethiopia |
Opal (rough and cut) Shoa Province, Ethiopia |