Short Answer
Complete Explanation
The number 585 stamped on jewellery indicates that the piece is made of gold alloy containing 58.5 % pure gold, which corresponds to 14 karat gold. This marking is part of the international hallmark system used to certify metal purity, especially in Europe and many other markets. The remaining 41.5 % of the alloy consists of other metals such as copper, silver, nickel or zinc, which give the jewellery its colour, hardness and durability.
- Gold content:
585 means 58.5 % gold by mass, equivalent to 14 karat (14 k) gold. - Legal standard:
Many countries require a minimum of 585 for an item to be marketed as “gold‑plated” or “gold‑filled”. - Marking context:
The 585 stamp is often accompanied by additional hallmarks indicating the maker, the assay office, and the year of certification. - Variations:
In the United States, the same purity is commonly marked as “14K” or “14kt”.
Common Misconceptions
585 means the jewellery is 58.5 % gold and 41.5 % silver.
The remaining alloy metals are not limited to silver; they can include copper, nickel, zinc, or other metals chosen for desired colour and strength.
A higher number, such as 750, always indicates a better quality piece.
While 750 (18 k) contains more gold, quality also depends on craftsmanship, design, and the suitability of the alloy for the intended use.
All 585‑stamped items are genuine gold.
Counterfeit hallmarks exist; verification by a reputable assay office or jeweller is recommended.
FAQ
Is 585 the same as 14K gold?
Yes. 585 indicates 58.5 % pure gold, which is equivalent to 14 karat (14 K) gold. Both markings describe the same level of purity.
Can a piece marked 585 contain other precious metals?
The 585 mark only refers to the gold content. The remaining 41.5 % of the alloy may include metals such as copper, silver, nickel or zinc, but it does not specify the presence of other precious metals.
How can I verify that a 585 stamp is authentic?
Authentic hallmarks are usually accompanied by additional marks indicating the assay office and the maker. For certainty, have the piece examined by a qualified jeweller or an official assay office.
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