Ranae: 0.81ct Heart-cut Simulated Ruby and IOF CZ Promise Friendship Ring 925 Silver, 3144 Features the seductive beauty of a Simulated Ruby solitaire accented with sparkling Russian Ice on Fire CZ's. A beautiful and elegant choice as a promise, friendship or commitment ring! Measures only about 7mm in depth, so it's a great choice for even smaller hands or fingers. Made with Solid 925 Sterling Silver with protective Rhodium finish.