24ct gold price per gram
24ct gold is pure gold, the figure every other carat on this site is a fraction of. Type the weight of your piece below to see what it is worth today. Its price is simply the spot price of a troy ounce divided by 31.1. In practice no gold is perfectly pure, so UK hallmarking law has two standards for it, 990 and 999 thousandths, and bullion bars and Britannia coins are refined to 999.9. This calculator values 24ct at 999, the higher legal standard, using the price of an ounce in pounds read from gold-api.com, and it shows the time of that price. The result is the metal value of a 24ct chain, a small bar or a piece of pure gold jewellery, before a buyer’s margin or a dealer’s premium. Gold by Carat is an independent site, not a gold buyer or a dealer.
Example: 10 g of 24ct (999 parts gold in 1,000)
£995.23
This is the value of the gold itself, at today’s price for pure gold. A buyer pays less.
| Pure gold inside | 9.990 g |
| Value of 1 g of 24ct | £99.52 |
Figures and rules checked by the site’s publisher, Radif Partners · How the values are worked out · Editorial policy
Pure gold by weight and grade
| Weight | At 999 (24ct) | At 999.9 (bullion) | At 990 |
|---|---|---|---|
| 1 g | £99.52 | £99.61 | £98.63 |
| 5 g | £497.61 | £498.06 | £493.13 |
| 10 g | £995.23 | £996.12 | £986.26 |
| 20 g | £1,990 | £1,992 | £1,973 |
| 1 troy oz | £3,096 | £3,098 | £3,068 |
| 50 g | £4,976 | £4,981 | £4,931 |
| 100 g | £9,952 | £9,961 | £9,863 |
More detail below: tap a heading to open it.
Why the gram price of 24ct is the starting point
The world market quotes gold by the troy ounce of pure metal. A troy ounce is 31.1034768 g, fixed in UK weights law, so a gram of fine gold is worth one 31.1th of the ounce price. Every other figure on this site is that gram price times a fraction: 0.375 for 9ct, 0.75 for 18ct, 916.6 thousandths for 22ct. When you see the 24ct gram price move, every other carat moves in the same proportion.
990, 999 and 999.9
UK hallmarking law lists both 990 and 999 as standards for gold. Some pure gold jewellery is made at 990 rather than 999. Bars from accredited refiners are usually 999.9, and that is the figure printed on the bar. When valuing, use the number on the item. If there is no number, a test is the only answer.
Buying pure gold
Bought as bars or coins that meet HMRC’s definition of investment gold, 24ct gold carries no VAT; bought as jewellery it carries the standard rate. The gold bar page shows the metal value of each bar size and the premium a dealer is asking, and the Britannia page does the same for the Royal Mint’s 999.9 coin.
Value a gold bar
Example: gold in a 100 g bar at 999.9
£9,961
No VAT on a bar of at least 995 fine in a weight the market accepts
| Per gram of fine gold | £99.62 |