Corundum var. Sapphire

Potanino Mine, Ilmen Mountains, Russia

Olmiite on matrix

N Chwanning II Mine, Kuruman, Republic of South Africa

Olmiite on Calcite

N Chwanning II Mine, Kuruman, Republic of South Africa

Opal (rough and cut)

Shoa Province, Ethiopia

Quartz "Faden"

Dara Ismael Khan District, Waziristan, Pakistan

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka