This beautiful ring is made from solid 10kt yellow gold. The gem is a 2.1 carat size Shelby simulated emerald. Really a very pretty, well made ring. Our simulated emeralds are in most ways better than natural emeralds. Ours are much much harder and more sparkly. Not to mention, they don't have the cracks and inclusions often found in natural emeralds. AND... ,like all of our gems,.. they come with our best in the business guarantee.