Acanthite

Imiter, Atlas Mountains, Morocco

Heulandite with Stilbite

Jalgon, Maharashtra State, India

Linarite

Sunshine #1 Mine, Bingham, NM

Opal (rough and cut)

Shoa Province, Ethiopia

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Wulfenite

Wulfenite from Villa Ahumada, Sierra de Los Lamentos, Chihuahua, Mexico