0.90 Carat (ctw) Sterling Silver Real Round Cut Natural Purple Amethyst Ladies Stud Earrings (4mm x 4mm) Crafted in 925 Sterling Silver Gemstone weight - 0.90 CT 4mm Round stone Gemstone : Purple Amethyst. Amethyst Color / Clarity : Purple / SI-I 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