Celestite

Rockwood, Michigan

Danburite rough and cut

San Luis Potosi, Mexico

Datolite with Quartz

Dalnegorsk, Primorskij Kraj, Russia

Olmiite

N Chwanning II Mine, Kuruman, Republic of South Africa

Quartz "Faden"

Dara Ismael Khan District, Waziristan, Pakistan

Corundum Var. Sapphire

Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka