What Does 585 Mean on Jewelry? A Deep Dive Into Gold Purity
Have you ever looked closely at your gold jewelry and noticed a small engraving that reads “585” ? If so, you might have wondered what it means. Is it a serial number? A brand mark? Or does it say something about the metal itself?
In reality, the 585 stamp is a hallmark used to indicate the purity of gold in a piece of jewelry. It’s a common marking found on gold items, especially those imported from Europe and other international markets.
This guide will walk you through everything you need to know about 585 gold. Whether you’re shopping for fine jewelry, evaluating inherited pieces, or simply expanding your knowledge, this guide will give you the confidence to understand and appreciate 585-marked jewelry.
What Does the Number 585 Mean on Jewelry?
The “585” marking on jewelry indicates that the item contains 58.5% pure gold , with the remaining 41.5% made up of other metals such as 925 silver, copper, zinc, or nickel. This combination creates an alloy that balances durability with beauty — making it ideal for everyday wear.
Why Not Use 100% Pure Gold?
Gold in its purest form (known as 24 karat gold) is too soft for regular use in jewelry. Because it can easily bend, scratch, or deform under pressure, jewelers mix it with harder metals to create alloys that are more suitable for rings, necklaces, bracelets, and earrings.
Understanding Karats vs. Millesimal Fineness
There are two main systems used around the world to express gold purity:
1. The Karat System (Used Primarily in the U.S.)
- Gold purity is measured in karats , where 24 karats = 100% pure gold .
- 14 karats = 14 parts gold out of 24 , which equals approximately 58.3% pure gold .
2. The Millesimal Fineness System (Used Internationally)
- Instead of using karats, many countries (especially in Europe and Asia) use a decimal-based system that expresses purity in parts per thousand .
- So, 58.5% pure gold = 585/1000 , or simply 585 gold .
This system allows for more precise measurements and is widely accepted across global markets. As a result, if you purchase gold jewelry from an international seller, you’re likely to encounter the 585 stamp rather than a “14K” label.
Why Is It Called 585 Gold?
To understand why gold with 58.5% purity is referred to as “585,” let’s break down the math:
Karat System (U.S.)
- Gold purity is measured in karats , where 24 karats = 100% pure gold .
- 14 karats = 14 parts gold out of 24 , which equals approximately 58.3% pure gold.
Millesimal Fineness System (Europe & International)
- Instead of using karats, many countries use a decimal-based system that expresses purity in parts per thousand .
- So, 58.5% pure gold = 585/1000 , or simply 585 gold .
This system allows for more precise measurements and is widely accepted across Europe, Asia, and other global markets. As a result, if you purchase gold jewelry from an international seller, you’re likely to encounter the 585 stamp rather than a “14K” label.
Is 585 Gold Real?
Yes, 585 gold is real gold — just not 100% pure. All fine jewelry uses alloys to enhance the strength and durability of gold, since pure 24K gold is too soft for regular wear .
Here’s how 585 gold compares to other types of gold:
| Type | Purity | Description |
| 24K Gold | 99.9% | Pure gold; too soft for everyday wear |
| 18K Gold | 75% | High-end jewelry; softer and more expensive |
| 14K Gold | 58.3% | Most common in the U.S. |
| 10K Gold | 41.7% | More durable but less valuable |
| Gold-plated | < 1% | Thin layer of gold over base metal |
| Gold-filled | ~5–10% | Thick layer of gold bonded to base metal |
Since 585 gold is essentially 14K gold , it’s considered solid gold — meaning the entire piece is made of the same alloy throughout. Unlike plated or filled gold, solid 585 gold will not tarnish, flake, or wear off over time.
The Different Types of 585 Jewelry
Not all 585-marked jewelry is created equal. Here are the main categories you may come across:
1. Solid 585 Gold Jewelry
This is the highest quality and most valuable type. The entire piece is made of 14K gold (58.5% pure) and can be worn daily without concern for damage or fading.
2. 585 Stamped Jewelry
These items are typically marked with “585,” “14K,” or “AU585” (AU being the chemical symbol for gold). These stamps indicate authenticity and purity.
3. 585 Gold-Plated Jewelry
Also marked as “14K GP” or “585 GP,” this type of jewelry features a thin layer of 14K gold over a base metal like brass or silver. While more affordable, it won’t last as long as solid 585 gold.
How to Identify 585 Gold Jewelry
Most gold jewelry will have a hallmark or stamp indicating its purity. You can usually find these marks in discreet places such as:
- Inside the band of a ring
- On the clasp of a necklace or bracelet
- Near the hinge of earrings
Use a jeweler’s loupe or magnifying glass to locate the stamp. Common markings include:
- 585
- 14K
- 14KT
- AU585
Some pieces may also feature additional hallmarks such as manufacturer logos, copyright symbols, or country-specific purity marks.
What Does 585 Gold Look Like?
The appearance of 585 gold depends on the alloy used:
- Yellow Gold: Contains silver and copper for a warm, classic golden hue. Often associated with traditional engagement rings and heirloom pieces.
- White Gold: Alloys with white metals like palladium or nickel and is often rhodium-plated for a bright, silvery finish. Popular for modern wedding bands and diamond settings.
- Rose Gold: Contains more copper, giving it a soft pink tone. Known for its romantic aesthetic and vintage appeal.
All variations maintain the same level of purity — 58.5% gold — and differ only in color based on the alloy composition.
What Is the Value of 585 Gold?
The value of 585 gold depends on several factors:
1. Weight
Heavier pieces contain more gold and are therefore worth more. You can calculate the base melt value using this formula:
(Weight in grams × 0.585) × current price of gold per gram
For example, if gold is priced at $60 per gram and your piece weighs 10 grams:
(10 × 0.585) × 60 = $351 minimum base value
Note: This is the melt value — actual retail prices will be higher due to craftsmanship, design, and any gemstones included.
2. Design & Craftsmanship
Designer pieces or handcrafted jewelry often commands a premium.
3. Gemstones
Diamonds, sapphires, or other stones significantly affect the overall value.
4. Market Conditions
Gold prices fluctuate daily, so the value of your 585 gold jewelry can change over time.
Should You Buy 585 Gold Jewelry?
Here’s a quick breakdown of the pros and cons to help you decide:
Pros:
- Durable and suitable for everyday wear
- Retains value better than lower-karat gold
- Available in yellow, white, and rose gold
- Widely accepted and recognized globally
- More affordable than 18K or 24K gold
Cons:
- Not as pure as higher-karat gold
- May cause skin reactions in some individuals due to alloy metals
- Lower resale value compared to 18K+ gold (unless in large quantities)
585 Jewelry Options You May Like
Fine gold 585 jewelry comes in a variety of styles, perfect for every occasion and personal preference:
- Rings: Often the most expensive type of 585 jewelry, rings are typically crafted with intricate designs or set with precious stones like diamonds.
- Bracelets: Available in multiple styles — from delicate chains to bold cuffs — bracelets offer versatility and elegance at a range of price points.
- Necklaces: From simple pendants to elaborate chokers, necklaces made in 585 gold provide a touch of luxury without breaking the bank.
- Earrings: Usually the most affordable option, earrings come in countless designs — studs, hoops, drops — and are perfect for both casual and formal occasions.
Each style brings its own unique charm while maintaining the quality and durability of 585 gold.
How to Care For Your 585 Gold Jewelry
Proper care ensures your jewelry stays beautiful for years to come. Follow these simple tips:
- Store your jewelry in a cool, dry place away from direct sunlight.
- Avoid exposure to harsh chemicals like chlorine, bleach, or cleaning agents.
- Remove jewelry before swimming, showering, or exercising to prevent damage.
- Clean regularly with a mild soap solution and soft cloth.
- Have it professionally cleaned once or twice a year.
Check out our full guide to [cleaning jewelry properly] for step-by-step instructions.
How to Tell If a Piece of Jewelry Is Really Made of Gold
If you’re unsure whether a piece is genuine, here are a few reliable methods:
Check the Stamp: Look for “585,” “14K,” or “AU585” . Fake gold may lack a proper hallmark or have an inconsistent stamp.
Acid Test: A professional jeweler can perform an acid test to confirm the gold’s purity.
Water Test: Real gold is dense and will sink in water. However, this isn’t foolproof, as fake gold can also sink.
Ceramic Scratch Test: Rub the jewelry across an unglazed ceramic tile. Real gold leaves a gold-colored streak; fake gold leaves a black streak.
Still uncertain? Visit a certified jeweler or appraiser for a definitive assessment.
Where to Buy Authentic 585 Gold Jewelry
When purchasing 585 gold jewelry, always buy from reputable sellers who provide certifications of authenticity .
At TrueFacet , we specialize in pre-owned luxury jewelry, watches, and handbags from top designers. Every piece we sell is carefully inspected and authenticated by our team of expert gemologists.
Whether you’re looking for a timeless engagement ring, a statement necklace, or elegant earrings, TrueFacet offers a curated selection of high-quality 585 gold jewelry that blends sophistication with value.
Ready to shop? Explore our collection today and experience the luxury of authentic fine jewelry at accessible prices.
Final Thoughts
Understanding what 585 means on jewelry empowers you to make informed decisions when buying or selling gold. Whether you’re investing in a new piece or evaluating something you already own, knowing the basics of gold purity helps ensure you’re getting genuine, high-quality jewelry.
At TrueFacet, we believe that luxury should be both beautiful and accessible — and now you’re equipped with the knowledge to shop confidently.
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