Lapis lazuli is a metamorphic rock that throughout history has been used as a semi-precious stone and been prized by many cultures (including the Egyptians) for its intense and beautiful colour. These sterling silver studs feature a 4mm round lapis stone with a 1.6cm front to back distance and butterfly backs for secure fastening onto your earlobes. The earrings have been stamped '925' and will arrive in sealed packaging.