Dioptase Altyn-Tyube, Karagandy Oblast, Kazakhstan |
Olmiite on matrix N Chwanning II Mine, Kuruman, Republic of South Africa |
Opal (rough and cut) Shoa Province, Ethiopia |
Quartz, var. Herkimer Diamond Ace of Diamonds Mine, Herkimer County, New York |
Corundum Var. Sapphire Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka |
Opal var. Hyalite San Luis Potosi, Mexico |