Necklaces / Pendants by Josef Koppmann One of a kind pendant necklace in silver and 24ct gold set with a vibrant green tourmaline. Features Primary Material : sterling silver Other Materials : 24ct gold and green tourmaline Length (inches) : 14.40 One of a Kind : Yes Metal : 24ct gold and sterling silver Gems : green tourmaline Hallmarked : Yes Cleaning InstructionsThe necklace is best kept clean by rubbing and brushing gently under running water with bicarbonate of soda. Do not submerge in water for long periods and do not clean the necklace in ultrasonic cleaning systems.