Kate Middleton Diana Replica Sterling Silver CZ Cubic Zirconia With Oval Blue CZ Engagement Ladies Ring (0.63 inch wide) Crafted in 925 Sterling-silver Cubic Zirconia Color / Clarity : Blue & White / Clean Weighs approximately 3.1 grams Measures 0.63 inch in length. The center cubic zirconia is darker shade of Sapphire color Dazzlingrock 90 Day Warranty - We stand behind our products. If you lose an accent stone or your setting is damaged during NORMAL wear, we will fix it for FREE. Please read our About us page for more info