S925 on the ring is the identification of the ring material. S925 refers to a ring made of 92.5% silver, where s is the first letter of silver in English. The s925 on the ring represents a ring made of 92.5% silver.
S925 silver has undergone special processing to improve the problem of easy oxidation of silver jewelry, making the properties of silver rings more stable and not easily oxidized, resulting in the ring turning yellow and black. The hardness and toughness of the s925 silver ring are also much higher than those of pure silver rings. Not only does it have a bright silver luster, but it is also very durable and suitable for daily wear.
In addition to the symbol of S925, some silver rings are also marked with S990, which represents silver jewelry with a silver content of not less than 990 parts per thousand. The purity of silver ring S990 is higher than S925; The highest purity in silver jewelry is S999, which refers to a silver content of 99.9%, also known as Thousand Foot Silver. It is the highest purity standard for silver products specified in the national standard "Regulations and Naming Methods for the Purity of Precious Metals in Jewelry".
