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Jewelry Maker's Mark Database

Welcome to Heritage's extensive database of designer jewelry marks.

A Maker's Mark is a unique stamp placed on jewelry and watches to ensure the authenticity of the manufacturer. These stamps are typically made up of the manufacturers initials, name, or another unique representative symbol. Identifying this mark is the first step in determining the value of a piece of jewelry. In addition to Maker's Marks, some countries require hallmarks, which are given by the country where manufacturing took place. Hallmarks can offer further information about the place of origin, date of manufacture, and metal content.

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Learn More about Gold Jewelry Maker's Stamps

What is a maker’s stamp on jewelry?
A maker's stamp is another term for maker's mark. The mark is stamped on the jewelry, and there may be other stamps on the jewelry also.
What do stamps on gold jewelry mean?
Besides the maker's mark, there is also a gold purity mark showing the percentage of pure gold in the piece. For example, "14K" may also be represented as "585", meaning it is 58.5% (14/24) pure gold. In the US, jewelers have been required to stamp a purity mark on their pieces since 1906, and in 1961 the US required a maker's mark.
What are purity stamps on gold jewelry?
  • 417 - 10K = 41.7% gold
  • 585 - 14k = 58.5% gold
  • 750 - 18K = 75% gold
  • 917 - 22K = 91.7% gold
  • 999 - 24K = 99.9% gold
What are jewelry hallmarks?
A true hallmark is a guarantee of an independent body or authority that the contents of the noble metal are true. Hallmarks vary by country. In some nations, such as the UK, the hallmark is made up of several stamps including the type of metal, the maker's mark and the year of the marking.

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