The word "pure" is engraved on the back of the earrings of Liu Fu Jewelry, which may be used to indicate that the earrings are made of pure gold or sterling silver. This symbol is the official registration symbol of Lukfook Jewelry, indicating that earrings are products of Lukfook Jewelry, with certain purity and quality assurance.

It should be noted that in order to ensure the purchase of real Lukfook jewelry products, it is best to go to official stores or authorized sales points to buy, and pay attention to check the brand imprint and other related information on the products.