Hallmark 750
What does a 750 hallmark mean?
750 means 75% pure gold, sold as 18ct. A gram of it is worth £70.91 in metal today and we pay £62.40 (14 Nov 2026, 03:28).
Gold value
£70.91/g
We pay
£62.40/g
The number is parts per thousand
Fineness marks state how many parts in a thousand are the precious metal. 750 is 750 parts in 1,000, so 75% of the weight is gold and the rest is the alloy that gives the piece its colour and hardness. In carats that is 18ct: a carat is one twenty-fourth, and 18/24 is 75%.
750 gold by weight today
| Weight | Pure gold | Metal value | We pay |
|---|---|---|---|
| 1 g | 0.75 g | £70.91 | £62.40 |
| 5 g | 3.75 g | £354.53 | £311.99 |
| 10 g | 7.50 g | £709.06 | £623.98 |
| 20 g | 15.00 g | £1,418.13 | £1,247.95 |
| 50 g | 37.50 g | £3,545.32 | £3,119.88 |
Is it real? Three quick checks
- Look for company. A genuine UK hallmark has the fineness number inside a shaped outline, plus a sponsor's mark and an Assay Office mark. A lone number with nothing beside it is a claim, not a hallmark.
- Watch for plating codes. GP, GEP, HGE, RG or a fraction like 1/20 12K mean a thin layer of gold over base metal. These are worth very little as scrap.
- Check with a magnet. Gold, silver and platinum are not magnetic. A pull towards the magnet means a steel or nickel core.
None of these replaces a test. We check every piece with an XRF analyser before we make an offer, so you are paid for what the metal actually is, marked or not.
Instant estimate
Live ratesYou get
£623.97
Indicative, for hallmarked items. Final offer confirmed after testing. Several items?
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