Necklaces / Pendants by Yvonne Gilhooly Eda necklace.Large Tourmaline quartz pendant on black spinel and sterling silver necklace. Features Primary Material : black spinel Other Materials : sterling silver and tourmaline quartz Length (inches) : 28 One of a Kind : Yes Metal : sterling silver Gems : black spinel and tourmaline quartz Hallmarked : Yes Cleaning InstructionsClean with soft cloth.Silver sections may be cleaned with a silver cloth