Free returns within 15 days. For detailed information, this product will be sent by Berchine. Product Material: 925 Sterling Silver. The Product Will Be Sent in 4 Pairs. Earring Diameters: 6mm- 5mm- 4mm- 3mm Stone Features: 1st Class Cubic Zircon. It weighs approximately 3 grams. -+0-5 grams. A grinding process has been applied against darkening. As long as the perfume is kept away from chemicals such as detergent, it will not darken. It will be sent with a gift package.