Jacinda: Heart-cut Simulated Blue Sapphire and IOF CZ Promise Friendship Ring Silver, 3144 Made with a shimmering Blue Simulated Sapphire solitaire accented with Russian Ice on Fire CZ's. 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 protective White Rhodium finish.