Dorsey - HASTINGS, LAB RED SAPPHIRE RING, GOLDA 14. 22 carat emerald cut lab grown red sapphire 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: 18k gold coated silver or 14k yellow gold Stone Type: Lab grown red sapphire Halo: Lab grown white sapphire or lab grown diamond Stone Shape: Emerald cut Carat: 14. 22 DEW lab grown red sapphire 1. 38 CTW DEW lab grown white