This absolutely stunning ring Is a cabochon moonstone with a diamond halo. The diamond halo is approximately 3/4 cts. White genuine diamonds . Glows flashy blue in every light , even sideways! Set in 18k yellow & white gold. The hallmarks are on the back of the ringEuropean So beautiful & unusual. Fabulous for everyone. . . Size 8 Antique Moonstone Ring | Diamond Halo 18K Blue Moonstone Diamond Moon