Accentuated with genuine black spinel beads and dyed black freshwater cultured pearls, this 14k white gold necklace creates eye-catching allure. Necklace Details Length: 18 in. Clasp: lobster-claw Metal: 14k white gold Stone Details Stone type: genuine black spinel Shape: round bead Cultured Pearl Details Type: freshwater Shape: round Size: 8-9 mm Color: dyed black Size: 18″. Gender: Female. Age Group: Adult.