Acanthite

Imiter, Atlas Mountains, Morocco

Celestite

Rockwood, Michigan

Danburite: Rough and Cut

Charcas, San Luis Potosi, Mexico

Olmiite on Calcite

N Chwanning II Mine, Kuruman, Republic of South Africa

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Serandite with Aegirine

Mont St. Hilaire, Quebec, Canada