Trustmark 925 Silver 1.25ct Brilliant-cut Russian Ice on Fire CZ Engagement Ring, Marissa 3001A Features a 7mm, 1.25 carat, Brilliant-cut Russian Ice on Fire CZ Solitaire. Gorgeous Solitaire Bridal Engagement Ring with Classic Lines and Style! Made with solid 925 Sterling Silver. Ring weighs approx. 3.1 grams.