Sphalerite on Quartz Shuikoushan Lead/Zinc Mine, Chaling, Hunan Province, China |
Corundum var. Sapphire Potanino Mine, Ilmen Mountains, Russia |
Diopside Merelani Hills, Lelatema Mtns., Arusha Region, Tanzania |
Tourmaline var. Uvite with Magnesite and Quartz Brumado, Bahia, Northeast Region, Brazil |
Wulfenite Wulfenite from Villa Ahumada, Sierra de Los Lamentos, Chihuahua, Mexico |
Opal (rough and cut) Shoa Province, Ethiopia |