What the carat means
For gold, carat measures purity out of 24 parts. 24 carat is pure gold, too soft for a ring that holds a stone. 18 carat is 18 parts gold in 24, or 75%. 14 carat is 14 parts in 24, or 58.5%. The rest is a blend of other metals that sets the colour and the hardness.
Do not confuse this carat with the carat weight of a diamond, which measures weight, not purity.
| 18k gold | 14k gold | |
|---|---|---|
| Gold content | 75% | 58.5% |
| UK hallmark | 750 | 585 |
| Colour | Richer and warmer, especially in yellow | Slightly paler |
| Hardness | Softer | A little harder in most alloys |
| Sensitive skin | Less alloy, so less risk | More alloy, so slightly more risk |
| Cost | Higher | Lower |