Necklaces / Pendants by John Field Features Primary Material : silver Other Materials : amber, carnelian, chrysoprase, dalmatian jasper, green garnet and turquoise Length (inches) : 17.5 One of a Kind : No Metal : sterling silver Gems : amber, carnelian, chrysoprase, dalmatian jasper, green garnet and turquoise Hallmarked : No Cleaning InstructionsWipe over the silver parts with a silver cloth occasionally.