Gem, Rock, and Mineral Postage Stamps Featuring

Mineral Name: Chrysoprase
Composition: Silicon oxide
Nomenclature: Named after the Greek words chrysos and prason which means "gold" and "a leek" respectively because of its color.
Industrial Uses: Gemstone.
Additional Notes: Chrysoprase is a variety of chalcedony that is impregnated with nickel compounds to produce a bright yellow-green color. Chalcedony is a cryptocrystalline (crystals of sub-microscopic size) variety of quartz with a somewhat waxy appearance.

Australia Scott 558
Chrysoprase (Quartz - Chalcedony)
Scott 558
6 cents
11 Jul 1973

The stamp shows a natural, unpolished specimen
and a polished gemstone. Philatelic Mineralogy Copyright © 1997-2010 by Richard Busch