The 18K Blue Moonstone Color Theory Ring is a celebration of blue. Here a fiery ring of sapphires encircles a cool, cushion cabochon cut Blue Moonstone, bringing you the color's every possibility. Our signature gold granulation gives the ring a luxe finish. Product Details 18K gold Blue moonstone, cushion cabochon cut, 2.10cts Blue sapphire 1.80cts Width: 14.9mm/ 0.59" Imported