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See French Ivory
Pyrite (also known as fool's gold) is a shiny, metallic mineral that is a form of iron. Marcasite stones come from pyrite.

Pyralin: See French Ivory.
Pyrite: A common mineral composed of iron disulphide with a pale brass-yellow color used as an iron ore and in the production of sulfur dioxide for sulfuric acid. Also called Fool's gold and Iron pyrite.

Other ivory imitations, not quite as good, were Ivorette, Ivorine, Ivory Pyralin, and DuBarry Pyralin. In the 1870's, there was a shortage of ivory for billiard balls and a $10,0000 prize was offered to anyone who could produce a substitute.

French Ivory: A plastic produced to simulate ivory. It was first produced by the Xylonite Company in 1866. Other names include Celluloid, Ivoride, Ivorine, Ivorite and Pyralin.

See also: See also: What is the meaning of Pendant, Ring, Necklace, Imitation, Diamond?

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