Purity is 92.5% of the silver.it has the most ideal hardness, gloss and antioxidant properties, can be inlaid with a variety of gems ,it is internationally recognized as one of the raw materials of high quality jewelry.
Note:
Please be noted the silver will be a dull colour after long time wearing,that's because the silver can absorb the poison of our body,therefore,it's normal,you can use the toothpaste to wash it,and then,will recover the bright and shinning again.