Opal (polished)

Jalisco, Mexico

Acanthite

Imiter, Atlas Mountains, Morocco

Zoisite Var. Tanzanite

Arusha, Merelani, Tanzania

Heulandite with Stilbite

Jalgon, Maharashtra State, India

Adamite on Limonite

Ojuela Mine, Mapimi, Durango, Mexico

Opal var. Hyalite

San Luis Potosi, Mexico