Natural Rainbow Blue Moonstone Faceted Drop Earrings. A very nice stone with flashes of blue in lighting. The french earwires are 14k solid gold or 14k gold filled or sterling silver - you choose . The semi transparent white gemstone size is 13x18mm. 20 carats of moonstones. The mannequin shows the relative size and how they will hang. Earrings hang 1.4 inches.