18k gold price table (GBP)
| Weight | Pure gold | Value |
|---|---|---|
| 1 × gram | 0.75 g | — |
| 2 × gram | 1.50 g | — |
| 5 × gram | 3.75 g | — |
| 10 × gram | 7.50 g | — |
Buying and selling 18k gold in the United Kingdom
UK hallmarking is compulsory above 1 g, so look for the 375 or 750 mark with an assay office symbol. Investment gold is VAT-free, but jewelry carries 20% VAT when new; scrap buyers pay well below the retail price.
Designer rings, Italian chains, luxury watch cases and bracelets, and fine bridal jewelry. It is softer than 14k, so 18k rings show wear faster but keep more resale value per gram.
Example: a piece weighing 3 grams of 18k gold has a melt value of —. A buyer paying 85% of melt would offer about —.
18k Gold Calculator
Calculate your gold jewelry value
This calculator shows the melt value of scrap gold based on live spot prices. Actual buyback prices from dealers are typically 70-95% of spot price depending on purity and quantity.
18k gold per gram – FAQ
What is the 18k gold price per gram in GBP today?
One gram of 18k gold contains 0.750 g of pure gold and is worth about — at today's spot price, before dealer margins, taxes or making charges.
How is the 18k price per gram calculated?
We take the live spot price per troy ounce, convert it to GBP, divide by 31.1035 to get the price per gram of pure gold, multiply by 0.75 for 18k purity and by 1 grams per gram.
Why is the shop price higher than this 18k rate?
UK hallmarking is compulsory above 1 g, so look for the 375 or 750 mark with an assay office symbol. Investment gold is VAT-free, but jewelry carries 20% VAT when new; scrap buyers pay well below the retail price.
How much will I get selling 18k gold?
With 75% gold content, 18k earns strong offers: 85–92% of melt value is common. Branded watches and signed designer pieces are usually worth far more sold whole than melted.
How do I recognise 18k gold?
Look for "750", "18K" or "18KT". Swiss watches carry a St. Bernard head; French pieces an eagle head. Italian chains often show "750" plus a star and province code.