Dorsey - HASTINGS, LAB EMERALD RING, SILVERA 14. 22 carat emerald cut lab grown emerald is encircled by a 1. 38 carat halo of round cut white sapphires or diamonds on the Hastings Ring. Custom styles can only be returned for store credit. The Fine Print: Metal: Sterling silver or 14k white gold Center stone: Lab grown emerald Halo: Lab grown white sapphire or lab grown diamond Stone Shape: Emerald cut Carat: 14. 22 DEW lab grown emerald 1. 38 CTW DEW lab grown white sapphire or 1. 38 CTW E F