Emerald Cut Lab Grown Diamonds Shop loose emerald cut lab grown diamonds at Luvia Designs. Emerald cut diamonds feature a rectangular shape with stepped facets that create a sophisticated, understated elegance and a distinctive windowed effect. Our IGI-certified emerald lab grown diamonds offer timeless style at exceptional value. Browse our collection of loose emerald cut lab grown diamonds in a range of carat weights, colors, and clarity grades — perfect for sleek, modern engagement rings and custom settings.