Adamite on Limonite Ojuela Mine, Mapimi, Durango, Mexico |
Corundum var. Sapphire Potanino Mine, Ilmen Mountains, Russia |
Zoisite Var. Tanzanite Merelani Mine, Lelatema Mountains, Arusha Region, Tanzania |
Opal var. Hyalite San Luis Potosi, Mexico |
Spinel (rough and cut) Mogok, Sagaing District, Mandalay Division, Burma (Myanmar) |
Tourmaline var. Uvite with Magnesite and Quartz Brumado, Bahia, Northeast Region, Brazil |