Corundum var. Sapphire Potanino Mine, Ilmen Mountains, Russia |
Beryl var. Aquamarine (etched) Itatia Mine, Minas Gerais, Brazil |
Quartz Var. Rose Lavra da Ilha Pegmatite, Taquaral, Itinga, Aracuai, Minas Gerais, Brazil |
Opal: Rough and Cut Shoa Province, Ethiopia |
Danburite rough and cut San Luis Potosi, Mexico |
Adamite on Limonite Ojuela Mine, Mapimi, Durango, Mexico |