Cabochon Cut Emerald & Diamond Ring 18kCabochon Cut Emerald Diamond Ring 18k. This stunning ring features an 11. 27 carat cabochon cut emerald and 6. 20 carats of round brilliant cut diamonds accenting the 18 karat yellow gold setting. The emerald is bezel set in yellow gold, with two strips of 18 karat white gold running lengthwise along each side. The white gold sections achieve a nice contrast of color with the emerald, as well as breaking up the pave sections of diamonds to really show