Composition: Silicon oxide
Nomenclature: Named after the Greek word iaspis which was a precious stone of the ancients.
Industrial Uses: Gemstones.
Additional Notes: Jasper is a variety of chalcedony that is heavily impregnated with iron compounds to produce an opaque red, reddish-brown, or brown color. Chalcedony is a cryptocrystalline (crystals of sub-microscopic size) variety of quartz.
Cyprus : Scott 913 : 10 cents : 9 Mar 1998
Germany, DDR : Scott 1604 : 10 pfennige : 17 Dec 1974
Banded jasper (quartz)
Russia : Scott 2825 : 4 kopecks : 26 Dec 1963