Emerald Step Cut Lab Created Loose Ruby GemstoneThese loose emerald shape step cut lab created ruby 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 Ruby Specs: Sizes: 6 x 4 mm 0. 65ct, 7 x 5 mm 1. 3ct, 8 x 6 mm 2ct, 9 x 7 mm 3ct, larger upon request Treatment: Lab Created Some sizes may take 4 weeks to be