What Does 375 Mean on Gold? Meaning, Value & Hallmarks
375 gold, also known as 9ct gold, is one of the most widely used gold alloys in jewellery. But what does the 375 hallmark actually mean? Is 375 gold valuable, and how does it compare to other gold purities? In this guide, we’ll explain everything you need to know about 375 gold, including its composition, value, hallmark identification, and care tips.
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What Does 375 Mean on Gold?
375 gold, also known as 9-carat gold (9ct), consists of 37.5% pure gold and 62.5% alloy metals such as silver, copper, or zinc. The 375 hallmark is a widely recognized stamp that confirms this gold purity.
Key Facts:
- 375 gold = 9ct gold (9K)
- 37.5% gold, 62.5% other metals
- More durable than higher karats due to alloy content
- Commonly used in affordable fine jewellery
- Popular for rings, earrings, and everyday jewellery
Why Are Alloys Used?
Pure gold (24ct) is too soft for daily wear. Adding alloys strengthens the metal and can also change its colour—for example, copper creates rose gold, while palladium creates white gold.
How Much is 375 Gold Worth?
The value of 375 gold depends on its weight, live gold price, and alloy content. You can estimate its worth using:
Gold Purity & Valuation Formula
The price of gold is measured per troy ounce (31.1g). Since 375 gold is only 37.5% pure, its value is calculated using:
Total Weight (g) × 0.375 × Live Gold Price per Gram
Gold Purity Conversion Table
| Gold Purity | Carat | Multiply the Gold Price By |
|---|---|---|
| 99.9% | 24ct | 0.999 |
| 91.6% | 22ct | 0.916 |
| 75% | 18ct | 0.750 |
| 58.5% | 14ct | 0.585 |
| 37.5% | 9ct (375) | 0.375 |
Example Valuation (as of January 2025, £2,267.74 per ounce / £72.90 per gram):
| Weight | Gold Content (37.5%) | Gold Price (£/g) | Estimated Value (£) |
|---|---|---|---|
| 5g | 1.875g pure gold | £72.90 | £136.69 |
| 10g | 3.75g pure gold | £72.90 | £273.38 |
| 20g | 7.5g pure gold | £72.90 | £546.75 |
Note: These are estimates based on January 2025 rates. Gold prices fluctuate daily. For real-time pricing, check :
Cash For Your Gold – 375 Gold Price Guide
LBMA Gold Pricing Updates
How to Identify a 375 Gold Hallmark
The 375 hallmark is a small stamped number that confirms your jewellery is 9ct gold. It is usually found inside rings, bracelet clasps, or on necklace tags.
Where to Find the 375 Stamp?
- Inside the band of rings
- On the clasp of bracelets and necklaces
- On the inner surface of gold bangles
- Sometimes accompanied by other assay marks
Jeweller’s Tip:
A magnifying glass or jeweller’s loupe can help you spot small hallmarks on vintage or worn-down jewellery.
If your jewellery has no hallmark, you may need a gold testing kit or a professional jeweller’s assessment to confirm its purity.
FAQs About 375 Gold
What is 375 gold?
375 gold, or 9ct gold, contains 37.5% pure gold and 62.5% alloy metals such as silver, copper, and zinc. The 375 hallmark confirms this gold purity.
Is 375 gold real gold?
Yes, 375 gold is real gold. It is legally recognized in the UK and many other countries as 9ct gold, a standard and durable gold alloy used in jewellery.
Does 375 gold tarnish?
Yes, 9ct gold can tarnish over time due to its alloy content. The copper and silver in the mix make it more reactive to moisture, chemicals, and air exposure. Regular cleaning helps prevent tarnishing.
Is 375 gold good for everyday wear?
Yes, 9ct gold is durable enough for daily use. It is harder and more scratch-resistant than higher-karat gold but can also be more brittle. Proper care ensures its longevity.
Can you wear 375 gold in water?
- Showering: Generally safe, but avoid harsh soaps that can dull the finish.
- Swimming: Not recommended, as chlorine and salt water can weaken and tarnish the metal over time.
How do I clean 375 gold jewellery?
Use mild soap and warm water with a soft cloth or brush. Avoid harsh chemicals like bleach or chlorine. A gold polishing cloth can help restore shine.
How can I tell if my 375 gold is real?
Check for the 375 hallmark, usually stamped on rings, bracelet clasps, or necklace tags. If in doubt, a gold purity test or professional jeweller’s assessment can verify authenticity.
Can fake gold be stamped 375?
Yes, counterfeiters can fake hallmarks, so a 375 stamp alone is not proof of authenticity. Other verification methods may be needed, like acid testing or electronic gold testers.
Why is 375 gold cheaper than 18ct gold?
375 gold is more affordable because it contains less pure gold (37.5%) than 18ct gold (75%). This lower gold content makes it a budget-friendly choice for fine jewellery.
Does 375 gold hold value?
Yes, 9ct gold retains value, but its price is lower than higher-karat gold due to its lower gold content. Prices fluctuate based on the gold market, and hallmark verification helps ensure resale value.
Conclusion & Further Reading
375 gold is a reliable choice for durable and affordable gold jewellery. Its balance of strength and gold content makes it perfect for everyday wear, and understanding its hallmark can help buyers make informed decisions.
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This guide provides valuable insights into 375 gold, including its meaning, value, and hallmark identification. If you want to invest in or learn more about 9ct gold jewellery, explore our resources for further details.