What Does 585 Mean on Gold? (Gold Markings Explained)
If you have ever looked closely at a piece of gold jewelry, you may have noticed a small number stamped into the metal such as 585. Many people wonder what these markings mean and whether they indicate real gold.
In this guide, we will explain what the 585 gold stamp means, how gold purity markings work, and how to verify whether gold jewelry is genuine.
What Does 585 Mean?
The stamp 585 means the jewelry contains 58.5% pure gold.
This purity level is equivalent to 14 karat gold, one of the most common types of gold used in jewelry.
Gold jewelry is often marked using either karat markings or numeric purity markings.
For example:
10K gold = 417
14K gold = 585
18K gold = 750
22K gold = 916
24K gold = 999
These numbers represent the percentage of pure gold contained in the metal.
Why Gold Uses Alloy Metals
Pure gold is very soft, which makes it impractical for everyday jewelry. Because of this, gold is typically mixed with other metals such as copper, silver, or nickel to increase durability.
For example, 14K gold contains:
58.5% pure gold
41.5% other metals
This mixture makes the jewelry stronger while still maintaining a high gold content.
Where to Find Gold Stamps
Gold purity markings are usually located in small areas of jewelry where they are less visible.
Common locations include:
Inside ring bands
On necklace clasps
On bracelet links
On the back of pendants
Because these stamps are small, a jeweler’s magnifier can make them easier to read.
View jeweler magnifiers here:
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Are Gold Stamps Always Accurate?
While gold stamps often indicate purity, they do not guarantee authenticity.
Some counterfeit jewelry may include fake stamps designed to make plated items appear genuine. Because of this, professional gold buyers often confirm gold purity using additional testing methods.
How to Verify Gold Purity
There are several ways to verify whether gold jewelry is genuine.
Common testing methods include:
Magnet testing
Weight comparison using precision scales
Professional gold acid testing
Acid testing is one of the most reliable methods used by jewelers and precious metal buyers to determine gold purity.
View professional gold testing kits here:
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Who Uses Gold Testing Tools?
Gold testing tools are widely used by professionals who regularly evaluate precious metals.
These tools are commonly used by:
Pawn shops
Jewelry buyers
Coin dealers
Gold refiners
Precious metal collectors
Using the proper tools allows buyers to quickly determine whether jewelry is genuine gold and identify its karat value.
Final Thoughts
The 585 stamp on gold jewelry means the item contains 58.5% pure gold, which is equivalent to 14K gold. These markings are used worldwide to identify gold purity.
However, stamps alone do not always guarantee authenticity. Professional testing tools such as jeweler magnifiers, precision scales, and gold testing acids provide the most reliable way to verify gold purity.
Browse professional gold testing tools here:
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