Each order has 4 pieces of pyrite (fool's gold). Each piece is approximately 1.5".
The name comes from the greek, "pyr" which means fire. When pyrite is struck with another hard mineral or metal, sparks occurred. Pyrite has a hardness of 6-6.5 and has a chemical formula of FeS2 (Iron sulfide).
Pyrite was soemtimes mistaken for gold, hence, the name fool's gold. Pyrite is easily distiguished from gold because it is lighter and harder than gold. Pyrite, unlike gold, cannot be scratched with a fingernail or knife.