Beautiful Marcasite Sterling Silver and stardust gold filled beads earrings. Marcasite jewelry is made of small polished and faceted stones that are inlayed in sterling silver. They are called Marcasite, but they are actually pyrite. They sparkle a little creating a unique and sophisticated piece of jewelry. Marcasite jewelry is usually a little heavier because those stones are inlayed in solid sterling silver. The earrings have leverback locks and are 1.4'' long (with lock).