Corundum var. Sapphire

Potanino Mine, Ilmen Mountains, Russia

Olmiite on matrix

N Chwanning II Mine, Kuruman, Republic of South Africa

Opal (rough and cut)

Shoa Province, Ethiopia

Opal: Rough and Cut

Shoa Province, Ethiopia

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Zoisite Var. Tanzanite

Arusha, Merelani, Tanzania