Colette: 1.72ct Brilliant-cut Russian Ice on Fire CZ 3 Stone Engagement Ring 316 Steel, 0838 Features a 6.5mm, 1.0 carat, Hearts-n-Arrows Brilliant-cut Russian Ice on Fire CZ Solitaire. It's classic lines and style make it an outstanding choice as a contemporary engagement ring! Made with solid 316L Surgical Stainless Steel Ring weighs approx. 2.7 grams.