Selling Gold in London: How to Get a Fair Valuation

If you have unwanted gold jewellery, broken chains, old rings or gold coins, selling them can help you turn unused items into money. However, before accepting an offer, it is important to understand how gold valuation works and how to compare different buyers.

When selling gold in London, the amount you receive depends on factors such as weight, carat, the applicable gold price and the buyer's purchasing rate. Understanding these factors can help you make a more informed decision.

How Is Gold Valuation Calculated?

Gold valuation starts with three main factors: weight, purity and the reference price of pure gold.

Carat indicates how much pure gold an item contains. For example, 9ct gold contains 37.5% pure gold, while 18ct gold contains 75%. The remaining metal consists of other metals used to make the jewellery more durable.

A basic estimate can be calculated using:

Weight × gold purity percentage × reference price per gram of pure gold.

The result is an estimated metal value, not necessarily the amount a buyer will pay.

Practical Example: How Weight and Carat Affect Gold Value

Consider three gold items. To demonstrate the calculation, assume the reference price of pure gold is £80 per gram. This is a hypothetical rate for illustration, not a live market price or a Gold For Exchange quotation.

Example 1: A 10-gram 9ct gold ring

A 10-gram ring made from 9ct gold contains 37.5% pure gold.

• Pure gold content: 10 × 37.5% = 3.75 grams.

• Estimated metal value: 3.75 × £80 = £300.

Example 2: A 10-gram 18ct gold ring

The second ring also weighs 10 grams, but it is made from 18ct gold, which contains 75% pure gold.

• Pure gold content: 10 × 75% = 7.5 grams.

• Estimated metal value: 7.5 × £80 = £600.

Although both rings weigh the same, the 18ct ring has twice the estimated metal value in this example because it contains twice as much pure gold.

Example 3: A 5-gram 18ct gold ring

Now consider an 18ct ring weighing only 5 grams.

• Pure gold content: 5 × 75% = 3.75 grams.

• Estimated metal value: 3.75 × £80 = £300.

This shows that both weight and carat affect gold value. A lighter item can have the same estimated metal value as a heavier item if its purity differs.

These calculations exclude buyer margins, refining costs and other applicable deductions. The final offer may therefore be lower than the estimated metal value.

How Is Gold Purity and Weight Checked?

A reliable gold valuation should involve checking the item's purity and measuring its weight accurately. Hallmarks can indicate the stated carat, but further testing may be needed to verify the metal's composition.

Depending on the item, a buyer may use acid testing, electronic testing or X-ray fluorescence (XRF) analysis. Each method has limitations. XRF analyses the surface, which may not always represent the composition throughout the item.

Ask whether you can observe the testing and weighing process. Check the weight displayed on the scales and ask how gemstones, clasps or other non-gold components are treated.

A transparent valuation should explain the tested purity, the weight used, the applicable gold rate and any deductions. This information allows you to understand how the buyer arrived at the offer.

How to Compare Gold Buyers in London

Choosing a gold buyer involves more than looking for the highest advertised price. Different businesses may use different buying rates, fees and payment terms.

Compare these factors before accepting an offer:

Buying rate: Ask which gold price is used, whether the rate applies to your carat and when it was set.

Testing method: Find out how the buyer checks purity and whether the results can be explained to you.

Weighing: Ask whether you can see the weight measurement and how non-gold components are handled.

Fees and deductions: Check for testing, refining, handling, postage or other charges. Ask how these affect the final payment.

Payment terms: Confirm the payment method, when payment will be made and whether any conditions apply.

Postal insurance: If using a postal service, check tracking, insurance limits and responsibility for loss or damage before sending your items.

Return policy: Ask what happens if you reject an offer, whether return charges apply and how your jewellery will be returned.

Where possible, request quotations from two or three buyers for the same items. Compare the final amount payable, not just the advertised rate. A buyer offering a higher headline rate may provide a lower final payment if additional deductions apply.

How to Prepare Before Selling Gold

Separate your jewellery by known carat and check for hallmarks, certificates or receipts. Mention gemstones, designer details or unusual pieces that could have value beyond their gold content.

Broken jewellery may still contain valuable gold, so repairing it is not always necessary before selling. Request a clear valuation breakdown and compare offers before making your decision.

Frequently Asked Questions

Where can I sell gold in London?

You can visit specialist gold buyers, jewellery shops or consider postal gold services. Compare valuation methods, fees, payment terms and return policies before choosing.

How much is 10 grams of 18ct gold worth?

It depends on the applicable gold price. At a hypothetical rate of £80 per gram of pure gold, its estimated metal value would be £600 before costs and deductions.

Can I sell broken gold jewellery?

Many gold buyers accept broken rings, chains and bracelets because the gold may still have value. Confirm the buyer's terms before proceeding.

How can I check whether a gold valuation is fair?

Ask for the tested purity, measured weight, applicable rate and any deductions. Compare the calculation and final offer with quotations from other buyers.

Get Your Gold Valued with Confidence

Understanding weight, carat and the gold price can help you assess an offer more confidently. A clear testing process, accurate weighing and an explained calculation make it easier to understand how your jewellery has been valued.

Visit Gold For Exchange's sell gold page to explore your options in London. Before accepting an offer, ask for a breakdown of the valuation and confirm any applicable charges and terms.