Gem, Rock, and Mineral Postage Stamps Featuring

Mineral Name: Realgar

Composition: Arsenic sulfide

Nomenclature: Named fom the Arabic "rahj al ghar" which means "powder of the mine."

Industrial Uses: Arsenic ore; pigments (fireworks color, for example).

Additional Notes: Also referred to as ruby silver. Realgar is a chemically unstable mineral that alters to pararealgar, a mineral which closely resembles orpiment. The chemical alteration is accelerated by exposure of the mineral to light.

Central Africa : Scott 1263 : 2000 francs : 1998

Realgar; Gold; Gypsum (desert rose)