Diamond education
14K vs 18K gold
More gold, or more strength. Both are real gold.
By the CTJ Jewellery team, led by founder Greg Ward · Updated September 2026 · Editorial policy
Key facts
- 18K: 75% gold, stamped 750
- 14K: 58.5% gold, stamped 585
- 18K has a richer colour
- 14K is harder-wearing
- 14K costs less
- Both come in yellow, white and rose
Side by side
| 14K | 18K | |
|---|---|---|
| Gold content | 58.5% | 75% |
| Hallmark | 585 | 750 |
| Colour | Slightly lighter | Richer, warmer |
| Durability | Harder-wearing | Softer |
| Price | Lower | Higher |
Which is better for an engagement ring?
Both work. Choose 18K for a richer colour and higher gold content. Choose 14K for a harder-wearing ring at a lower price, especially for active hands.
What does CTJ use?
CTJ makes jewellery in 14K and 18K. Lab-grown diamond studs and pendants start in 14K white, yellow or rose gold, and other metals are quoted on request.