Olmiite on Calcite

N Chwanning II Mine, Kuruman, Republic of South Africa

Opal var. Hyalite

San Luis Potosi, Mexico

Opal: Rough and Cut

Shoa Province, Ethiopia

Quartz Var. Rose

Lavra da Ilha Pegmatite, Taquaral, Itinga, Aracuai, Minas Gerais, Brazil

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Stilbite

Jalgaon, India