Acanthite

Imiter, Atlas Mountains, Morocco

Danburite rough and cut

San Luis Potosi, Mexico

Quartz, var. Herkimer Diamond

Ace of Diamonds Mine, Herkimer County, New York

Quartz "Faden"

Dara Ismael Khan District, Waziristan, Pakistan

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Tourmaline var. Uvite with Magnesite and Quartz

Brumado, Bahia, Northeast Region, Brazil