0.50 CT 4MM Sterling Silver Purple CZ Cubic Zirconia Square Stud Earrings 0.50 Carat Total Weight 925 Stamped Authentic Sterling Silver Jewelry Top Graded AAA Quality Cubic Zirconia Pushback Backings. Platinum Plated 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