Danburite rough and cut

San Luis Potosi, Mexico

Datolite with Quartz

Dalnegorsk, Primorskij Kraj, Russia

Opal var. Hyalite

San Luis Potosi, Mexico

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Serandite with Aegirine

Mont St. Hilaire, Quebec, Canada

Tourmaline Var. Elbaite

Kunar Province, Afganistan