Pyrite suns, also called "miners dollars" are spectacular disk-shaped mineral concretions of pyrite. This pyrite sun was found in a coal mine in Sparta, Illinois. Pyrite, in it's natural form, is believed to supplement physical energy with the energy of the sun, increases stamina, stimulate the intellect, and protects against negativity. This Pyrite Sun Disc was cast in Antique brass and is 2 3/4" diameter and the brass chain is 18" long.