Pyrite (Greek, literally “fire-cutting stone”), sulfur pyrite, iron pyrite.
During the gold rush, due to its external resemblance to gold, it was nicknamed "fool's gold". In sedimentary rocks, pyrite can replace organic tissues, in particular, in the bones of fossil animals.
Pyrite is one of the most spectacular minerals in jewelry. The metallic luster is its most characteristic feature, so this mineral is easily recognizable.