Beryl var. Aquamarine (etched) Itatia Mine, Minas Gerais, Brazil |
Garnet var. Hessonite Jeffrey Mine, Asbestos, Quebec, Canada |
Corundum Var. Sapphire Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka |
Olmiite on Calcite N Chwanning II Mine, Kuruman, Republic of South Africa |
Opal (polished) Jalisco, Mexico |
Dioptase Altyn-Tyube, Karagandy Oblast, Kazakhstan |