Tiny Stamps on Shiny Objects: A History of US Gold & Silver Marks

You’ve probably seen “K” and 925 marks before, but unless you are really into jewelry, those marks may not mean much. There are so many different markings, it can be downright confusing. At the simplest level, you should know that any number with a K mark after it indicates the purity of gold, and a 925 stamp means the jewelry is made of sterling silver. Read on to learn more about the purity marks you’ll find on jewelry in the United States. Check back for future posts on marks for other countries.

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