S925是什么意思

"S925" is a hallmark or quality mark used for sterling silver jewelry and other silver items. It indicates that the item is made of 92.5% pure silver, which is the standard for sterling silver. The remaining 7.5% is typically made up of other metals, usually copper, to add strength and durability to the silver, as pure silver is quite soft and malleable.

The "S" in S925 often stands for "silver," and the number "925" represents the fineness of the silver, meaning that out of 1,000 parts, 925 parts are pure silver. This mark is used in many countries around the world, including the United States, to indicate the purity of the silver content in a product.

When you see the S925 mark on a piece of jewelry or a silver item, you can be assured that it meets the standard for sterling silver and is not plated or made from a lower quality silver alloy. It's a guarantee of the silver content and a sign of quality.