Diopside Merelani Hills, Lelatema Mtns., Arusha Region, Tanzania |
Olmiite on Calcite N Chwanning II Mine, Kuruman, Republic of South Africa |
Corundum Var. Sapphire Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka |
Danburite rough and cut San Luis Potosi, Mexico |
Opal: Rough and Cut Shoa Province, Ethiopia |
Lapis Lazuli (polished and carved) Sar-e-Sang, Badakhshan Province, Afghanistan |