MATERIAL OF RINGGenuine Ceramic & Quality Brass with 18K White/Rose gold platedExtra plating 0.05 mil thickness for long lasting shineMade with Premium grade crystals from AustriaDiameter of Crystals, 0.9mm : 11pcsDIAMETER OF RING SIZEUS 4 : 14.8mm to 15.6mmUS 5 : 15.5mm to 16.1mmUS 6 : 16.3mm to 16.7mmUS 7 : 17.1mm to 17.9mmUS 8 : 18.3mm to 18.8mmUS 9 : 19.2mm to 19.6mmUS 10 : 19.8mm to 20.2mmWE KNOW WHAT’S BEST FOR YOUOur jewellery are safe and comfortable even for customers with delicate, sensitive skin.We use Hypoallergenic, Lead Free and Nickel Free material double coated with real gold plating(Extra coating plating 0.05 mil thickness for long lasting shine) for our jewellery.JEWELLERY CAREKeep your jewellery in the Provided PVC Zip care pouch after every wear.Advise not to get in contact with harsh chemical (etc. perfume, dishwasher, soap), water and sweat to avoid it from discoloration.All Jewellery should be keep dry and clean after every wear. Her Jewellery Her Jewellery Iris Ceramic Ring (White) - Luxury Crystal Embellishments plated with 18K Gold