Corundum Var. Sapphire Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka |
Beryl var. Aquamarine (etched) Itatia Mine, Minas Gerais, Brazil |
Beryl var. Aquamarine Quy Chau District, Nghe An Province, Vietnam |
Danburite rough and cut San Luis Potosi, Mexico |
Olmiite on matrix N Chwanning II Mine, Kuruman, Republic of South Africa |
Olmiite on Calcite N Chwanning II Mine, Kuruman, Republic of South Africa |