Acanthite

Imiter, Atlas Mountains, Morocco

Olmiite on matrix

N Chwanning II Mine, Kuruman, Republic of South Africa

Opal (polished)

Jalisco, Mexico

Spinel (rough and cut)

Mogok, Sagaing District, Mandalay Division, Burma (Myanmar)

Tourmaline Var. Elbaite

Kunar Province, Afganistan

Tourmaline var. Uvite with Magnesite and Quartz

Brumado, Bahia, Northeast Region, Brazil