Adamite on Limonite

Ojuela Mine, Mapimi, Durango, Mexico

Heulandite with Stilbite

Jalgon, Maharashtra State, India

Opal var. Hyalite

San Luis Potosi, Mexico

Opal: Rough and Cut

Shoa Province, Ethiopia

Zoisite Var. Tanzanite

Arusha, Merelani, Tanzania

Tourmaline var. Uvite with Magnesite and Quartz

Brumado, Bahia, Northeast Region, Brazil