Realgar

Big Photo

China
7.46 carats
© Rarestone.com

Realgar is named from Arabic "rahj al-gar" - powder of the mine, because it was found in a silver mine.

Realgar forms red to orange-yellow prismatic crystals or granular masses. The crystals disintegrate to a powder after long exposure to light. However, this process takes a very long time. Realgar specimens should be kept in the dark, in an eclosed container.

Realgar is a very rare gem. It is very soft and somewhat unstable.

Realgar Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 
General Information
Chemical Formula
AsS
Michael O’Donoghue, Gems, Sixth Edition (2006)
Mohs Hardness
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