Danburite rough and cut

San Luis Potosi, Mexico

Diopside

Merelani Hills, Lelatema Mtns., Arusha Region, Tanzania

Heulandite with Stilbite

Jalgon, Maharashtra State, India

Olmiite on matrix

N Chwanning II Mine, Kuruman, Republic of South Africa

Zoisite Var. Tanzanite

Arusha, Merelani, Tanzania

Tourmaline Var. Elbaite

Kunar Province, Afganistan