[★ Material] Handmade, international standard 925 sterling silver (handmade without electroplating) [★ Size] Constellation is about 0.7cm high and 1mm thick (Ear pin with 925 sterling silver buckle) Choose from 12 constellation totems, or single or pair [★ Constellation Selection] Trouble note the required constellation totem. [★ Product Packaging] Fashion texture flannel small paper box, exquisite black small paper bag, chain storage bag, high-grade nano silver cloth, business card guarantee card (including material maintenance instructions). [★ Maintenance method] 1. Frequently worn, the body oil can provide protection, so that the jewelry is not easy to turn black. 2. If you do not wear it for a long time, you can wipe it with a silver cloth and put it in a sealed bag. 3. Do not soak in hot springs, sea water, and chemicals to prevent sulfur from turning black. 4. Usually clean with a toothbrush and toothpaste, and then gently scrub, then rinse with water and blow dry. 【★ Warranty】 Necklace warranty is limited to pendants. If there is any problem with the necklace, it can be returned within seven days. We will replace it with a new product immediately. It can also be cleaned and maintained free of charge, but postage will be charged. Warranty will not be provided after one month.