.50 Vintage Deco Sapphire Engagement Ring 18kThis Art Deco engagement ring centers a . 50 carat round brilliant cut sapphire in a distinctive teal blue color. The sapphire sits in a four prong setting surrounded by 18 single cut diamonds totaling . 18 carats, with each diamond measuring 2. 0mm and weighing . 03 carats. Round cut sapphires maximize light return and show more sparkle than other sapphire cuts, making this teal stone particularly lively. The 18 karat white gold mounting features