Emerald Cut Lab Created Alexandrite GemstoneThese loose emerald faceted step cut lab created alexandrite gemstones are available for a custom built ring by Nodeform Jewelry. Select your stone size & type, then select a ring setting that fits the shape and size of the selected stone. Add both to your cart and we'll create your ring! Lab Created Alexandrite Specs: Sizes: 6 x 4 mm 0. 65ct, 7 x 5 mm 1. 2ct, 8 x 6 mm 2. 0ct, 9 x 7 mm 2. 75ct, larger upon request Treatment: Lab Created Blue green by