What is a genuine marcasite?

Genuine marcasite is a gemstone, but it also refers to a kind of jewelry that involves embedding microscopic fragments of pyrite in silver motifs. Marcasite jewelry has a distinct appearance and is commonly found in vintage jewelry. Genuine marcasite will have a stamp that says "925". The facets of the polished marcasite pieces reflect light, giving it an appealing gleam. Find a wide range of genuine marcasite jewelry pieces on 1stDibs.