Dioptase Altyn-Tyube, Karagandy Oblast, Kazakhstan |
Corundum Var. Sapphire Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka |
Quartz, var. Herkimer Diamond Ace of Diamonds Mine, Herkimer County, New York |
Olmiite on matrix N Chwanning II Mine, Kuruman, Republic of South Africa |
Spinel (rough and cut) Mogok, Sagaing District, Mandalay Division, Burma (Myanmar) |
Serandite with Aegirine Mont St. Hilaire, Quebec, Canada |