Create your own downtown ready look with our Cushion Cut Peridot & Diamond Birthstone Necklace. Handcrafted in 14K Gold to reflect everlasting beauty and sophistication. Birthstone Necklace for Women Metal - 14K Gold (White / Yellow) Gem Type - Cushion Cut Peridot Gemstone (0.31 CTTW) Diamonds - Natural Round Shape (0.04 CTTW) Diamond Color/Clarity - GH/SI1 Setting - Bezel with Milgrain Chain - 18 inch with jump rings at 16 & 17 inches.