Corundum var. Sapphire

Potanino Mine, Ilmen Mountains, Russia

Danburite rough and cut

San Luis Potosi, Mexico

Dioptase

Altyn-Tyube, Karagandy Oblast, Kazakhstan

Sphalerite on Quartz

Shuikoushan Lead/Zinc Mine, Chaling, Hunan Province, China

Spinel (rough and cut)

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

Zoisite Var. Tanzanite

Arusha, Merelani, Tanzania