Opal: Rough and Cut Shoa Province, Ethiopia |
Adamite on Limonite Ojuela Mine, Mapimi, Durango, Mexico |
Opal (rough and cut) Shoa Province, Ethiopia |
Spinel (rough and cut) Mogok, Sagaing District, Mandalay Division, Burma (Myanmar) |
Corundum var. Sapphire Potanino Mine, Ilmen Mountains, Russia |
Quartz Var. Rose Lavra da Ilha Pegmatite, Taquaral, Itinga, Aracuai, Minas Gerais, Brazil |