Colleen: Heart-cut Simulated Citrine and IOF CZ Promise Engagement Ring 925 Silver, 3217 Made with a sparkling Simulated Citrine Ice CZ 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.