Danburite: Rough and Cut

Charcas, San Luis Potosi, Mexico

Heulandite with Stilbite

Jalgon, Maharashtra State, India

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Danburite rough and cut

San Luis Potosi, Mexico

Smithsonite

Tsumeb Mine, Tsumeb, Namibia

Opal var. Hyalite

San Luis Potosi, Mexico