Dioptase Altyn-Tyube, Karagandy Oblast, Kazakhstan |
Olmiite on Calcite N Chwanning II Mine, Kuruman, Republic of South Africa |
Olmiite on matrix N Chwanning II Mine, Kuruman, Republic of South Africa |
Beryl var. Aquamarine (etched) Itatia Mine, Minas Gerais, Brazil |
Opal (rough and cut) Shoa Province, Ethiopia |
Opal: Rough and Cut Shoa Province, Ethiopia |