Olmiite on matrix N Chwanning II Mine, Kuruman, Republic of South Africa |
Opal (polished) Jalisco, Mexico |
Spinel (rough and cut) Mogok, Sagaing District, Mandalay Division, Burma (Myanmar) |
Sphalerite on Quartz Shuikoushan Lead/Zinc Mine, Chaling, Hunan Province, China |
Serandite with Aegirine Mont St. Hilaire, Quebec, Canada |
Corundum var. Sapphire Potanino Mine, Ilmen Mountains, Russia |