Opal (rough and cut) Shoa Province, Ethiopia |
Corundum var. Sapphire Potanino Mine, Ilmen Mountains, Russia |
Quartz var. Faden Dara Ismael Khan District, Waziristan, Pakistan |
Olmiite on Calcite N Chwanning II Mine, Kuruman, Republic of South Africa |
Spinel (rough and cut) Mogok, Sagaing District, Mandalay Division, Burma (Myanmar) |
Corundum Var. Sapphire Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka |