Miranda: Heart-cut Simulated Swiss-Blue Topaz n IOF CZ Promise Engagement Ring Silver, 3213 Made with a sparkling Simulated Swiss-Blue Topaz Ice CZ solitaire and Russian Ice on Fire CZ accents. A beautiful and elegant choice as a promise, friendship or commitment ring! Measures about 7mm in depth, so it's a great choice for even smaller hands or fingers. Made with Solid 925 Sterling Silver with a protective Rhodium finish.