21ct gold price per gram in pounds
21ct gold is seven eighths pure gold, the usual standard for jewellery bought in the Gulf. Type the weight of your piece below to see what the gold in it is worth today. It holds 21 parts of gold in 24, which is 875 thousandths, and this calculator values it on that basis using the spot price of gold in pounds from gold-api.com, with the time of the price shown. 21ct is the everyday standard for jewellery in Saudi Arabia, the Gulf states and much of the Middle East, so many British families own pieces bought there. It is not one of the standards in UK hallmarking law, which runs 375, 585, 750, 916.6, 990 and 999, so a 21ct piece cannot be hallmarked as 21ct here and a buyer will test it before paying. The figure on this page is therefore a guide: the real value is what the test finds. Gold by Carat is an independent site, not a gold buyer or a dealer.
Example: 10 g of 21ct (875 parts gold in 1,000)
£871.70
This is the value of the gold itself, at today’s price for pure gold. A buyer pays less.
| Pure gold inside | 8.750 g |
| Value of 1 g of 21ct | £87.17 |
Figures and rules checked by the site’s publisher, Radif Partners · How the values are worked out · Editorial policy
21ct gold price by weight, next to its neighbours
| Weight | 21ct (875) | 22ct (916.6) | 18ct (750) |
|---|---|---|---|
| 5 g | £435.85 | £456.57 | £373.58 |
| 10 g | £871.70 | £913.14 | £747.17 |
| 20 g | £1,743 | £1,826 | £1,494 |
| 50 g | £4,358 | £4,566 | £3,736 |
| 100 g | £8,717 | £9,131 | £7,472 |
More detail below: tap a heading to open it.
Why 21ct has no British standard
UK hallmarking law lists six standards for gold: 375, 585, 750, 916.6, 990 and 999. The hallmarking law gives the carat equivalents for 9, 14, 18 and 22. There is no 21. An article must reach a standard to be hallmarked at it, and an article described for sale in the UK as gold must be hallmarked unless it is exempt. So a trader selling 21ct here would have to have it marked 750 and give away the difference. That is why 21ct is rare in British shops and common in British homes.
Selling 21ct in the UK
Expect the buyer to test. An X-ray fluorescence scanner reads the surface in seconds; acid tests on a touchstone take longer and are less precise; a fire assay, which melts a sample, is the most precise and is used by refiners. Ask what the test found and write it down. If it shows 875, the calculator above gives the metal value. If it shows something else, type the weight into the carat converter or use the hallmark decoder with the fineness the test found.
Gulf jewellery often comes in heavy sets, so the money involved can be substantial. Two quotes, each converted to a percentage of the metal, are worth the effort. The scrap gold calculator works out a mixed lot.
Compare two or three quotes
Example: Offer B pays the most
75.1%
of the £871.70 the gold in 10 g of 21ct is worth
| Offer A: £565.00 | 64.8% |
| Offer B: £655.00 | 75.1% |
| Gap between best and worst | £90.00 |