How much is 9ct gold worth per gram?

What 9ct gold actually is

Carat is a measure of purity, out of 24 parts. 9ct gold contains 9 parts gold and 15 parts other metals, usually copper, silver and zinc. That works out at 37.5 percent pure gold, which is why 9ct items are hallmarked with the number 375. The other metals are there for hardness and colour, but they add almost nothing to the scrap value. When a dealer prices a 9ct item, they are paying for the 37.5 percent of it that is gold.

The formula behind every quote

Any honest scrap gold price comes from the same three numbers. First, the spot price: the live international price of pure gold, quoted in US dollars per troy ounce and converted into euro. A troy ounce is 31.1035 grams, so dividing the euro spot price by that figure gives the value of one gram of pure gold. Second, the fineness: for 9ct, multiply by 0.375. Third, the payout rate: the percentage of that contained gold value the buyer pays, which covers their refining costs and margin.

So the calculation for one gram of 9ct is: euro spot price per gram, times 0.375, times the payout rate. Our own rates and the live figures are published on the prices page, which updates every 15 minutes, so you never need to guess what a fair number looks like.

Weighing your items properly

Gold is weighed in grams on a calibrated scale. A kitchen scale gives you a rough starting point, but note two things. Stones, glass, springs and steel findings are not gold, and a fair buyer weighs around them or deducts them. And hollow items, like rope chains and lockets, often weigh less than they appear. If your item is hallmarked 375, the weight in grams times the current 9ct rate gives you a realistic expectation before you go anywhere.

Why offers differ between buyers

The spot price is the same for everyone, and the gold content of 9ct never changes. The only real difference between one buyer and another is the payout rate and how honestly the item is tested and weighed. Some buyers advertise a headline rate and then deduct testing fees or round the weight down. Others quote per pennyweight or per ounce to make comparison harder. Always ask for the price per gram, in euro, after all deductions, and compare that single number.

Hallmarks and unmarked items

Most Irish and British 9ct jewellery carries a 375 hallmark, and older pieces may be marked 9ct or 9K. A missing mark does not mean an item is fake: solder joins, resizing and wear can remove marks, and some older or imported pieces were never marked. This is where XRF testing matters. The analyser reads the actual composition of the metal in seconds, without damaging the piece, so unmarked 9ct is identified and paid at the proper rate rather than a cautious guess.

Getting a real number for your gold

Check the live 9ct rate on our prices page, weigh your items, and multiply. If you would rather have us do it, use the calculator and enquiry form on the sell page: describe the items, attach photos, and you will get a straight answer based on the published rates, with testing done in front of you before any deal is agreed.