Maquise Lab Grown Emerald Loose StoneDiscover our loose marquise shaped lab grown emerald gemstones, perfect for creating a custom ring with Nodeform Jewelry. Simply choose your preferred stone size, then select a compatible ring setting that fits the shape and size of the selected stone. Add both to your cart and well craft your unique ring just for you. Emerald Specs: Sizes: 8 x 4 mm ~0. 46ct, 9 x 4. 5 mm ~0. 63ct, 10 x 7 mm ~0. 8ct Treatment: Lab Created Color: Medium to dark green;