How Gold Is Valued in the UK: Price per Gram, Karat & Live Rates Explained
If you have ever asked “How much is my gold worth?”, the answer comes down to three moving parts: purity, weight, and the live gold price. In the UK, those factors combine to determine what a gold ring, bracelet, chain, coin, or bar is worth on the day you sell or buy.
This guide explains how gold is valued in the UK, how to read carat and hallmark information, why the gold price per gram changes, and what to check before accepting a quote.
Quick routes
If you want a live figure or a fast next step while reading, these are the most useful London Gold Centre pages to keep open alongside this article.
How purity affects the price you are offered
In the UK, gold purity is usually described in carats. As a simple rule, the higher the carat, the more pure gold is in the item and the higher the value per gram. That is why 24ct gold, 22ct jewellery, 18ct rings, and 9ct chains all return different values even if they weigh the same.
Hallmarks help confirm purity, but the hallmark is not the only thing that matters. Worn, damaged, or older pieces may need testing before a final offer is made. At London Gold Centre we use X-ray testing where suitable; acid testing is reserved as a last resort, or after a customer has agreed to a price if doubts remain.
Why the gold price per gram changes
The gold price per gram in the UK is linked to the live market price for gold, usually expressed through the spot price and then converted into pounds per gram. That means your valuation can move during the day as the gold market moves, the pound shifts, or wider global demand changes.
That is why it makes sense to check a live pricing tool before visiting or posting items. London Gold Centre’s Scrap Gold Value Calculator and Gold Price Per Gram page are useful starting points when you want an up-to-date benchmark.
How London Gold Centre checks and values gold
A physical valuation is more than a multiplication by the headline gold price. Our Hatton Garden team follows a practical sequence so the purity, payable precious-metal weight and most suitable resale route can be considered separately.
- Identify the item and check its marks. We inspect hallmarks, construction and any available paperwork. A hallmark is useful evidence, but worn, repaired or unhallmarked items can need further testing.
- Confirm the metal where needed. We use X-ray testing or acid testing depending on the type of gold and the questions raised by the initial inspection. Acid testing is a last resort, or is used after the customer has agreed to a price if doubts remain.
- Measure the payable gold content. The item is weighed and its verified purity is applied. Stones and other non-gold parts are not treated as gold weight.
- Choose the correct valuation route. Scrap jewellery is normally valued for recoverable metal. Recognisable bullion, coins, branded pieces or collectable items may have a different route because specification, condition and resale demand can also matter.
- Explain the offer. The market reference, verified purity, payable weight and relevant route are brought together before an offer is finalised.
Testing is item-specific. If a method could mark an item, the team explains the reason before proceeding.
How our online rates and calculators work
Our price pages use third-party Metals-API market-reference data for gold, silver, platinum and palladium, stored in pounds sterling. The site attempts to refresh its stored rates every minute during trading hours, and an open page checks the site's stored feed at roughly 60-second intervals. A refresh check does not mean the underlying market price has moved; outside trading hours the last available close may remain visible.
One troy ounce is 31.1034768 grams. Some main-site display calculations use 31.1035 as the rounded conversion. Stored ounce references are rounded to two decimal places and gram references to four decimal places, so very small differences can appear when figures are compared with another source.
If an upstream refresh fails, the last valid stored rate is retained rather than replaced with an error value. Historical charts can also use a limited fallback when complete historical observations are unavailable. For that reason, the calculators are guidance tools, not executable market quotes or guaranteed offers.
Four figures that should not be confused
- Market reference: a third-party metal rate used as the starting point.
- Calculator estimate: a guide based on the selected metal, purity, weight and configured payout factor.
- Physical valuation: an item-specific offer after its metal, payable weight and condition are checked.
- Shop retail price: a separate selling price that can include product-specific premiums and remains payable in GBP.
The LBMA link below is independent market background; London Gold Centre does not describe its website rates as the official LBMA Gold Price.
Jewellery, coins, and bars are not always valued the same way
A simple scrap gold bracelet is usually valued mainly for its metal content. Recognisable bullion items such as gold coins or gold bars may achieve a different route because recognisability, condition, and format matter as well as pure metal weight.
That distinction matters if you are separating a mixed lot. Sellers often get better clarity by grouping jewellery, coins, and bars separately before asking for a quote. It also helps to mention branded or investment items in advance so they are not treated as generic scrap when a better route may exist.
How to get a more accurate same-day quote
Start with the live rate, separate items by purity if you can, and bring anything helpful such as receipts, certificates, or packaging for bullion products. If you are posting items instead of visiting in person, use a tracked and appropriate delivery method and contact the team first if you are sending mixed or high-value items.
Reputable buyers explain how the quote is reached. That usually means weighing the items, identifying or testing purity where needed, and then matching them to the most suitable valuation route. If you want to compare routes first, you can also review pages for selling gold online, bullion by post, or buying bullion.
Use official sources where the rules matter
For tax, shipping, assay, and refiner standards, always confirm the latest official guidance before making a large decision. These external resources are the most relevant starting points for this topic.
Frequently asked questions
How do I work out the gold price per gram?
A live gold price per gram starts with the current market gold price and is then adjusted by purity. A 24ct item has a different per-gram value from a 9ct or 18ct item because the gold content is different.
Do stones count in a scrap gold valuation?
Usually no. Stones and other non-gold parts are not normally valued as gold weight, so many buyers remove or discount them when calculating a scrap-gold offer.
What if my gold has no hallmark?
Unhallmarked items can still be checked. A reputable buyer may use testing methods to confirm the metal content before any offer is finalised.
Are coins and bars valued differently from jewellery?
They can be. Recognised bullion products may follow a more specific bullion valuation route than ordinary broken or unwanted jewellery.
Need a live quote or a practical next step?
Use the relevant calculator, visit Hatton Garden, or contact the team if you want help turning this information into a real buying or selling decision.