Such a sweet way to say I love you with our sterling silver cz Key To Your Heart necklace. Crafted in .925 sterling silver and available with a 16 or 18 inch sterling silver chain, the 0.5 carats of cubic zirconia are artfully designed in the shapes of a lock and key to show whomever you give it to that they still hold the keys to your heart. Dimensions: Pendant: 1in. (26mm) Length/ 1/2 in. (15mm) Width Weight: 0.5 Carats Total