925 Sterling Silver Enamel on Silver Finishing: 14k Gold Plating Handcrafted in Istanbul Weight: 5,5 g Dimensions: 23.75x22.5x5.2 mm Please inform me for the size ring . Silver naturally oxidize over time. To delay oxidation, keep your jewelry away from water activities, shower steam, parfume and other chemicals. Every after use, clean your jewelry with a very soft cloth to remove any dust. Safely put each piece in your box.