Pyrite Cluster

A natural pyrite cluster with the cubic crystalline habit that distinguishes pyrite from other metallic minerals — tight, interlocking cubes of fool's gold projecting from a matrix base. The lustre is not tarnished brass; it is genuinely bright, reflective, and catches light like polished metal.

Pyrite is iron disulfide (FeS₂), and its perfect cubic habit is a direct expression of its crystal structure at the atomic level. Each cube face is a crystallographic plane. The mineral has been mined since antiquity — its name comes from the Greek for fire, because striking it against flint produces sparks.

A pyrite cluster is one of the most striking desk minerals available. It does not need a stand — the matrix base holds it upright. It looks expensive. It photographs exceptionally well.