Acanthite

Imiter, Atlas Mountains, Morocco

Quartz, var. Herkimer Diamond

Ace of Diamonds Mine, Herkimer County, New York

Heulandite with Stilbite

Jalgon, Maharashtra State, India

Olmiite on matrix

N Chwanning II Mine, Kuruman, Republic of South Africa

Opal (polished)

Jalisco, Mexico

Zoisite Var. Tanzanite

Arusha, Merelani, Tanzania