Quartz, var. Herkimer Diamond

Ace of Diamonds Mine, Herkimer County, New York

Opal: Rough and Cut

Shoa Province, Ethiopia

Quartz Var. Rose

Lavra da Ilha Pegmatite, Taquaral, Itinga, Aracuai, Minas Gerais, Brazil

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka

Spinel (rough and cut)

Mogok, Sagaing District, Mandalay Division, Burma (Myanmar)

Wulfenite

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