Ark Angel Alchemy Sterling Silver Natural Rainbow Moonstone 30ct. 18" Cluster Necklace box Rainbow Moonstone necklace is over 118 carats total weight, 23 grams. 18" Sterling Silver Cable Chain with lobster claw clasp. The gemstones span 85mm and the necklace is 22mm in width at the center.* The oval stones measure 8mm x 10mm, the round stones measure 5mm in diameter and 8mm in diameter. The teardrop stones measure 7mm x 10mm and the marquise stones measure 6mm x 12mm. Includes a Free, Silver Gift Box Handmade, Polished Finish, Excellent Quality, Meticulous Detail.