18ct Gold – The Complete Guide to 750 Gold, Hallmarks, Gold Purity & 18 Carat Gold Values

18ct gold is one of the most sought-after gold alloys in the jewellery industry and is widely regarded as the perfect balance between luxury, purity, beauty, and durability. Found in high-end jewellery collections across the UK and worldwide, 18ct gold is commonly used in engagement rings, wedding bands, designer jewellery, luxury watches, necklaces, bracelets, and investment-quality pieces.

At 888 Bullion, we specialise in buying 18ct gold jewellery, scrap gold, broken jewellery, gold watches, luxury gold items, designer jewellery, and complete gold packs. Use our Gold Calculator to get an instant estimate.


What Is 18ct Gold?

18ct gold contains 75% pure gold and 25% alloy metals. The official hallmark is 750. For a full explanation of gold purity, see our Understanding Gold Purity guide and British Hallmark Guide.


The History of 18ct Gold

18ct gold has been the gold standard for luxury jewellery for centuries, favoured by European jewellers and luxury houses for its rich colour and high purity. Read our full History of 18ct Gold guide for more.


Is 18ct Gold Real Gold?

Yes. 18ct gold contains a significantly higher proportion of gold than 8ct, 9ct, 10ct, and 14ct gold. Because it contains 75% pure gold, it is considered premium gold jewellery.


International Gold Hallmarks Guide


How Much Is 18ct Gold Worth?

The value depends on purity (75%), weight, and the live gold spot price. Use our Gold Calculator for an instant estimate. Read also: Best Time to Sell Gold in the UK.


Scrap 18ct Gold Value

Broken chains, bent rings, damaged bracelets, single earrings, and worn jewellery all retain value. Even heavily damaged jewellery often retains substantial value.


Items We Buy at 888 Bullion

We purchase engagement rings, wedding rings, signet rings, designer jewellery, necklaces, chains, bracelets, earrings, luxury watches, and vintage jewellery. See our full list: 18ct gold items we buy.


Why Sell Your 18ct Gold to 888 Bullion?

Customers choose 888 Bullion for professional valuations, competitive pricing, transparent process, and fast payment. Visit our Sell Gold & Silver page or request a Gold Pack to get started.


Frequently Asked Questions

What Does 750 Mean on Gold?

750 means 75% pure gold. See our British Hallmark Guide for more.

How Much Is 18ct Gold Worth Per Gram?

The price changes daily. Check our Gold Calculator for the latest estimate.

Is Now a Good Time to Sell Gold?

Read our guide: Best Time to Sell Gold in the UK.


Sell Your 18ct Gold Today

Use the 888 Bullion Gold Calculator today and find out how much your 18ct gold could be worth.

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