Sell 18ct Gold — Premium Per-Gram Valuations
18ct is one of the most valuable jewellery-grade golds, commonly used for engagement rings and fine pieces. We give it the careful valuation it deserves.
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Why 18ct gold commands stronger prices
18ct gold is 75% pure gold (750 parts per thousand), with the remaining 25% made up of harder alloys to give the metal everyday wearability. That high gold content is why 18ct items consistently fetch significantly more per gram than 9ct.
Look for the "750" hallmark stamped inside rings, on chain clasps or on the reverse of pendants. Designer 18ct pieces from established makers are reviewed for their resale value alongside their metal value, and we offer whichever is higher.
Because the gold content is so high, accurate weighing matters even more — half a gram of 18ct is worth several times that of 9ct. We weigh on calibrated scales and document the figures in your itemised offer.
18ct gold deserves an accountable buyer
Higher-value pieces should never be handed to an unnamed depot. Every 18ct item we receive is processed at our public flagship HQ with a verifiable team behind it.
HighStreetGold operates from its headquarters above the flagship Cash Generator store in St Helens town centre — a real, identifiable UK business with genuine premises, real staff and a public local reputation. You always know who is behind your valuation.
Frequently asked questions
What's the difference between 18ct yellow, white and rose gold?+
All three are 75% pure gold — only the alloy metals differ. The per-gram valuation is the same.
Do you buy 18ct designer jewellery?+
Yes. Cartier, Tiffany, Boodles and similar items are reviewed for resale value before we offer.
Is 750 the same as 18ct?+
Yes — 750 is the international purity stamp for 18 carat gold.
Will diamonds in my 18ct ring be valued separately?+
Significant diamonds are assessed in addition to the gold content. Small accent stones don't typically add value.
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