What Is 585 in Jewelry? Essential Gold Hallmark Guide

If you have ever examined a piece of gold jewelry closely and noticed the number 585 stamped somewhere on the metal, you may have found yourself wondering what is 585 in jewelry and how it relates to the gold content and overall quality of the piece. This particular hallmark is extremely common, especially on jewelry manufactured outside the United States, but understanding exactly what it indicates can help you shop and evaluate gold jewelry with much greater confidence.

In this guide, we will break down exactly what the 585 hallmark means, how it compares to more familiar karat markings, and what it tells you about a piece's overall gold content and value. If you are looking for clearly labeled gold jewelry you can trust, our Everyday Gold Jewelry collection offers transparent labeling so you always know exactly what you are getting.

What Is 585 in Jewelry

The number 585 is a hallmark indicating gold purity, specifically representing 14 karat gold. This marking reflects the millesimal fineness system, a method of expressing metal purity as parts per thousand rather than the karat system more commonly used in the United States.

In this system, 585 indicates that the metal contains 585 parts pure gold out of 1,000 total parts, meaning the piece is composed of 58.5 percent pure gold, with the remaining percentage made up of other metals alloyed with the gold to increase durability and, in some cases, adjust the final color of the piece.

Understanding the Millesimal Fineness System

The millesimal fineness system is widely used throughout Europe and many other regions around the world as the standard method for indicating precious metal purity. Rather than using the karat system familiar to American consumers, which measures purity out of 24 total parts, the millesimal system measures purity out of 1,000 total parts, offering a more precise, decimal based method of indicating exact metal content.

This system applies not just to gold, but to other precious metals as well, including silver and platinum, each using their own corresponding numerical markings to indicate specific purity levels within their respective 1,000 part scale.

How 585 Compares to Karat Markings

For those more familiar with the karat system commonly used in the United States, understanding how 585 translates to karat purity can help clarify exactly what this hallmark represents.

585 corresponds to 14 karat gold, since 14 karat gold contains 14 out of 24 parts pure gold, which calculates to approximately 58.3 percent purity, rounded to 585 within the millesimal fineness system.

This means that if you encounter a piece of jewelry marked 585, you can generally consider it equivalent in gold content to a piece marked 14K, even though the specific numerical marking differs based on which purity measurement system was used by the manufacturer.

Other Common Millesimal Fineness Markings

Beyond 585, several other common millesimal fineness markings appear on gold jewelry, each corresponding to a different karat equivalent.

• 375 corresponds to 9 karat gold, containing 37.5 percent pure gold, representing one of the lower purity options commonly used in some regions, particularly the United Kingdom.
• 417 corresponds to 10 karat gold, containing approximately 41.7 percent pure gold.
• 750 corresponds to 18 karat gold, containing 75 percent pure gold, representing a higher purity option offering a richer gold color and generally increased value compared to lower karat alternatives.
• 916 corresponds to 22 karat gold, containing 91.6 percent pure gold, commonly used in certain regions, particularly parts of Asia and the Middle East, where higher purity gold jewelry is more traditionally favored.
• 999 corresponds to 24 karat gold, representing essentially pure gold, though this purity level is rarely used for standard jewelry due to its extreme softness, making it more prone to bending, scratching, and general damage during everyday wear.

Why 585 Is a Popular Gold Purity Choice

14 karat gold, indicated by the 585 hallmark, represents one of the most popular purity choices for jewelry worldwide, and for good reason. This particular purity level offers a favorable balance between gold content and durability, since the alloyed metals mixed with the gold increase the material's overall hardness and resistance to scratching, bending, and general wear compared to higher purity options like 18 or 24 karat gold.

Because of this practical balance, 585 gold is particularly well suited for jewelry intended for regular, everyday wear, such as rings, bracelets, and necklaces that experience frequent contact and potential impact throughout daily activities.

Is 585 Gold a Good Quality Choice

Yes, 585 gold, equivalent to 14 karat, is generally considered a solid, reliable quality choice for jewelry, offering genuine gold content combined with practical durability for regular wear. While it contains less pure gold compared to higher purity options like 18 or 24 karat, this reduced gold content is exactly what contributes to its increased durability, making it a particularly practical choice for everyday jewelry rather than purely ceremonial or decorative pieces.

Many fine jewelry retailers worldwide, including numerous well established brands, commonly use 14 karat, or 585, gold specifically because it offers this appealing combination of genuine value and everyday practicality.

How to Identify the 585 Hallmark

If you are examining jewelry and want to check for a 585 hallmark specifically, look at common marking locations, including the clasp of a necklace or bracelet, the inside of a ring band, or another small, typically inconspicuous area of the piece. Because these hallmarks are often quite small, a magnifying glass or jeweler's loupe can be particularly helpful for locating and clearly reading the specific numbers stamped into the metal.

Keep in mind that jewelry manufactured or sold primarily within the United States more commonly uses karat markings like 14K rather than the millesimal fineness system, meaning you are more likely to encounter the 585 hallmark specifically on jewelry manufactured in or imported from Europe, or other regions that commonly use this particular purity marking system.

Does 585 Gold Tarnish

Like other karat gold options below 24 karat purity, 585 gold can be prone to some tarnishing or discoloration over time, primarily due to the alloyed metals mixed with the pure gold content. However, this tarnishing tendency is generally less pronounced compared to lower purity options like 375 or 417, since 585 gold contains a higher overall percentage of pure gold, which is naturally resistant to tarnish, compared to the alloyed metals making up the remaining percentage of the piece.

Proper care, including avoiding harsh chemicals and excessive moisture exposure, along with regular gentle cleaning, can help minimize any tarnishing tendency and keep 585 gold jewelry looking its best over time.

Comparing 585 to Other Common Gold Purities for Jewelry

When deciding between different gold purity options, understanding how 585 compares to other common choices can help inform your specific jewelry buying decisions.

• 585, or 14 karat, offers a practical balance of gold content and durability, making it well suited for everyday jewelry.
• 750, or 18 karat, offers a richer gold color and higher gold content, generally commanding a higher price, and is often chosen for more special occasion pieces or those specifically valued for their higher gold percentage.
• 375, or 9 karat, offers the most affordable gold option with the lowest gold content, generally chosen when budget is the primary consideration over gold purity itself.

Final Thoughts

So, what is 585 in jewelry? It is a hallmark indicating 14 karat gold, representing 58.5 percent pure gold content according to the millesimal fineness system commonly used internationally. This particular purity level offers a practical, popular balance between genuine gold content and everyday durability, making it a widely favored choice for jewelry intended for regular wear.

Understanding hallmarks like 585 empowers you to shop and evaluate gold jewelry with much greater confidence, whether you are purchasing a new piece or simply trying to understand the markings on jewelry already in your collection.

Frequently Asked Questions

1. Is 585 gold the same as 14K gold?

Yes, 585 and 14K both indicate the same gold purity level, just expressed using two different measurement systems.

2. Is 585 gold considered high quality?

Yes, 585 gold offers a solid, practical balance between genuine gold content and everyday durability, making it a popular and reliable choice for jewelry.

3. Why do some countries use 585 instead of 14K markings?

Many countries, particularly throughout Europe, use the millesimal fineness system as their standard method for indicating precious metal purity, rather than the karat system more common in the United States.

4. Does 585 gold require special care compared to higher karat gold?

585 gold may be slightly more prone to tarnishing compared to higher purity options like 18 or 24 karat, though standard gentle jewelry care practices are generally sufficient to keep it looking its best.