Gem, Rock, and Mineral Postage Stamps Featuring
Dioptase


Mineral Name: Dioptase

Composition: Copper silicate hydroxide

Nomenclature: Named after the Greek word "dioptezein" which means "to see into" because its cleavage planes could be seen by looking into the crystal.

Industrial Uses: Copper ore.

Additional Notes: .



Angola : Scott 553 : 1.5 escudo : 31 Oct 1970

Dioptase



Congo People's Republic : Scott C95 : 150 CFA francs : 20 Mar 1970

Dioptase



Namibia : Scott 679 : 20 cents : 2 Jan 1991

Dioptase



Zaire : Scott 1108 : 6 zaire : 13 Feb 1983

Dioptase