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