Twilight: 1.96ct Simulated Blue Sapphire Crystal Split Band Engagement Ring 316 Steel, 3239B Features an 8 x 6mm, 1.50 carat, Oval-cut Simulated Blue Sapphire Crystal Solitaire. A contemporary yet traditional design that captures the beauty of the Simulated Blue Sapphire Crystal Solitaire. Made with solid 316 Surgical Stainless Steel. Ring weighs approx. 2.4 grams.