Gold Guide
Learn how gold purity works, how to read hallmarks, and how professional evaluation determines value.
What Is Gold Purity?
Gold purity is measured in karats (K). Pure gold is 24K. Lower karats contain a mixture of gold and other metals such as copper, silver, nickel, or zinc.
These metals increase strength and durability because pure gold is naturally soft.
Karat & Hallmark Reference
| Karat | Hallmark | Gold % | Other Metals % |
|---|---|---|---|
| 24K | 999 | 99.9% | 0.1% |
| 22K | 916 | 91.6% | 8.4% |
| 18K | 750 | 75% | 25% |
| 14K | 585 | 58.3% | 41.7% |
| 12K | 500 | 50% | 50% |
| 10K | 417 | 41.7% | 58.3% |
| 9K | 375 | 37.5% | 62.5% |
Where to Find the Hallmark
- Inside ring bands
- Near the clasp on chains and bracelets
- On small metal tags attached to jewellery
- On earring posts or backings
Some jewellery may not have a visible hallmark. Professional testing is often required to confirm purity.
Warning: Fake or Misleading Stamps
A hallmark stamp alone does not guarantee authenticity. Some jewellery may carry fake, altered, or misleading stamps.
Gold-plated or gold-filled items may contain numbers that appear similar to real hallmarks but contain very little gold.
Gold Is Valued by Weight
The value of gold is determined by two main factors:
- Weight (grams)
- Purity (karat)
This means gold is effectively valued by the grams of pure gold contained in the item, regardless of jewellery design.
Does Broken Gold Still Have Value?
Yes. Broken chains, single earrings, damaged rings, and scrap jewellery still contain gold.
Gold value is determined by weight and purity, not whether the jewellery piece is complete.
Why Gold Comes in Different Colors
- Rose gold contains more copper.
- White gold is mixed with nickel or palladium.
- Yellow gold contains silver and copper alloys.
Color does not determine value — purity does.
How Gold Is Priced Globally
Gold is traded internationally and priced in U.S. dollars per troy ounce (31.1035 grams).
Local buying rates are derived from the international spot price and adjusted for currency exchange and market conditions.
Interesting Gold Facts
- Gold melts at 1,064°C (1,947°F).
- Gold does not rust or corrode.
- Nearly all gold ever mined still exists today.
- Gold has been used as money for over 5,000 years.
- Gold is one of the most chemically stable metals.
Ready to Check Your Gold?
Use our calculator to estimate value or submit your gold for evaluation.