Corundum var. Sapphire Potanino Mine, Ilmen Mountains, Russia |
Opal var. Hyalite San Luis Potosi, Mexico |
Beryl var. Aquamarine Quy Chau District, Nghe An Province, Vietnam |
Zoisite Var. Tanzanite Merelani Mine, Lelatema Mountains, Arusha Region, Tanzania |
Tourmaline var. Uvite with Magnesite and Quartz Brumado, Bahia, Northeast Region, Brazil |
Olmiite on matrix N Chwanning II Mine, Kuruman, Republic of South Africa |