1.00 Carat (ctw) Sterling Silver Oval Blue Tanzanite Ladies Stud Earrings 1 CT Crafted in 925 Sterling-silver Gemstone : Tanzanite Weighs approximately 0.88 grams Tanzanite Color / Clarity : Blue / Moderately Included. It is a trendy accessory and makes a perfect gift for any occasion. 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