Opal (polished) Jalisco, Mexico |
Zoisite Var. Tanzanite Merelani Mine, Lelatema Mountains, Arusha Region, Tanzania |
Wulfenite Wulfenite from Villa Ahumada, Sierra de Los Lamentos, Chihuahua, Mexico |
Spinel (rough and cut) Mogok, Sagaing District, Mandalay Division, Burma (Myanmar) |
Olmiite on Calcite N Chwanning II Mine, Kuruman, Republic of South Africa |
Dioptase Altyn-Tyube, Karagandy Oblast, Kazakhstan |