Hallmarks & Carats

Rolled gold vs solid gold: the RG and fraction marks, weight and value

Solid gold is gold all the way through and carries a standard mark such as 375, 750 or 916. Rolled gold is a layer of carat gold bonded to a base-metal core, usually marked RG, rolled gold or a fraction such as 1/10 12ct, and that mark is not a hallmark. GoldPaid does not buy rolled gold as precious metal.

By Rocco Clayfield, trading as GoldPaid; the business incorporated as GOLDPAID LTD (company 17382540) on 5 August 2026 · Published · updated

What is the difference between rolled gold and solid gold?Solid gold is an alloy that is gold all the way through, hallmarked at a UK standard such as 9ct (375), 18ct (750) or 22ct (916). Rolled gold is a layer of carat gold bonded to a base-metal core. Older British pieces are usually marked "RG", "rolled gold" or a fraction such as "1/10 12ct", meaning one tenth of the metal’s weight is 12ct gold, which is about 5% fine gold. Solid gold is valued on its tested gold content. GoldPaid does not buy rolled gold as precious metal and pays nothing for it.

Not sure if it is solid gold? Send us a photo

Photograph any stamp close up, then the whole piece, and send both on WhatsApp. We will tell you whether it looks solid or plated, and roughly what we would pay if it is gold. No obligation, and nothing needs posting.

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Not sure what the mark says? Use the hallmark lookup. Final offers depend on inspection, item weight, purity, hallmarks, stones, non-gold components, condition and the live precious-metal market.

What rolled gold actually is

Rolled gold, sometimes called gold-filled in American catalogues, is a sandwich. A sheet of carat gold is heat-bonded under pressure to a sheet of brass or copper, then rolled out into thinner stock that the manufacturer uses for chains, watch cases, pen barrels and pocket-watch alberts. The bond is mechanical and metallurgical, so the gold layer does not flake off the way electroplating does. That is why Victorian and Edwardian rolled-gold chains still look golden a century later.

The gold layer is real carat gold, but it is thin. British rolled gold from the late 1800s onwards was often marked with a fraction such as "1/5 12ct" or "1/10 14ct". The fraction is the share of the metal’s weight that is the gold layer, the same convention the US Federal Trade Commission rule, 16 CFR 23.3 uses for gold-filled and rolled gold plate marks; the UK has no statutory definition. A 1/10 12ct chain is one tenth 12ct gold by weight, which works out at about 5% fine gold. A 1/20 12ct piece holds about 2.5%, and a 1/5 12ct piece about 10%. The rest is base metal.

Solid gold in the UK system

Solid gold in Britain means a homogeneous gold alloy assayed and hallmarked to one of the legal standards. The four common marks you will see on jewellery are 375 (9ct), 585 (14ct), 750 (18ct) and 916 (22ct). Some bullion bars and a small slice of fine jewellery carry 999. Each number is parts per thousand of pure gold in the alloy. The rest is silver, copper, zinc, palladium or nickel, blended for hardness and colour.

Solid gold is gold the whole way down. You can file the back of a ring and you will still hit the same alloy. The hallmark is struck into that single body of metal, applied by one of the four UK assay offices after testing.

How to tell which one you own

The fastest indicator: look for a fraction next to the carat number. "1/20 14ct" is rolled gold. "750" or "18ct" on its own is solid. If the chain has worn through to a coppery or grey base layer at the clasp or links, that is also a giveaway. The marks that are genuine hallmarks are set out in the chart of UK gold hallmarks.
  1. Find the mark. Check inside the bezel of a watch, on the bolt-ring of a chain, on the inside of a ring shank, or stamped on a pin back.
  2. Read the format. A bare 375, 585, 750, 916 or 999 with a sponsor and assay office mark is solid. "RG", "Rolled Gold", "Gold Filled", "GF", or a fraction like 1/10 12ct is rolled.
  3. Inspect the wear points. Use a 10x loupe on the highest-wear edges. Solid gold wears uniformly to the same colour. Rolled gold shows a different metal under the gold once the layer is worn through.
  4. Weigh it. Rolled-gold chains feel light for their bulk because the core is brass. A solid 9ct curb chain of the same dimensions will feel noticeably heavier in the hand.
  5. When the marks are gone, post it. XRF alone will not settle rolled gold, because it reads only the top few microns and a bonded gold layer reads as solid. We combine the reading with weight, density and inspection of the wear points and cut edges.

Does GoldPaid buy rolled gold?

No. GoldPaid does not buy rolled gold, gold-filled or gold-plated pieces as precious metal, and pays nothing for them, whatever fraction the mark shows. If a rolled-gold piece arrives in a parcel, it is listed separately in the written offer at nil value and returned to you free with anything else you decline. Solid pieces in the same parcel are valued on their own lines.

Final offers depend on inspection, item weight, purity, hallmarks, stones, non-gold components, condition and the live precious-metal market.

When rolled gold is worth more as jewellery than as scrap

Late Victorian rolled-gold alberts, named locket chains, signed mourning jewellery and early 20th-century Elgin or Waltham pocket watches in rolled-gold cases can carry collector value that exceeds the scrap recovery. The same applies to signed Trifari, Monet, or French rolled-gold dress jewellery in clean condition with original boxes. If a piece has provenance, sell it as an object, not as metal.

GoldPaid does not value rolled-gold pieces as objects either, so an auction house or a specialist dealer is the route for those. A clear photograph of the marks and the whole piece is the usual starting point.

Sending rolled and solid pieces together by post

Mixing rolled and solid pieces in one parcel is fine. Each piece is checked on its own. Solid gold is valued on its tested purity and weight, and rolled pieces are listed separately in the written offer at nil value and returned to you free with anything else you decline.

Your parcel travels on Royal Mail Special Delivery Guaranteed, tracked and signed for. Royal Mail cover may be available up to £2,500 depending on the postal method and cover level used. GoldPaid can confirm the appropriate postal option before you post. If the lot may be worth more than £2,500, tell us first and we can split it across more than one prepaid label at no charge. Read the full method on the sell gold by post page.

Assay first, then decide

Rolled gold is not a knock-off. It is a manufacturing tradition with real metallurgy behind it. The honest way to handle a mixed box is to test each piece, value the solid gold on its measured content, and say plainly which pieces are rolled and not bought. A buyer who quotes one flat rate for a mixed parcel without weighing or testing it is guessing. If you are unsure which pieces are rolled, send a photo of the marks before you post anything.

Next step: have the mark checked against the metal

A hallmark records the standard a piece was assayed at. It does not tell you what the alloy measures now, what the piece weighs once stones and non-gold parts are set aside, or where the market sits today. Send a photo of the punches on WhatsApp and we will tell you what can reasonably be read from an image. Post the piece and it is XRF-tested on arrival, with a written offer showing the purity found, the weight and the figure for each piece. Decline it and the tracked return costs you nothing. Accept it and we aim to pay by Faster Payments within one working hour of your acceptance.

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Common questions

Is rolled gold worthless?

As precious metal, yes: GoldPaid does not buy rolled gold and pays nothing for it. It does contain real carat gold in its bonded layer, and signed or antique rolled-gold pieces can still sell as objects through an auction house or dealer.

Can I sell rolled gold without a hallmark?

Not to GoldPaid. Rolled gold is not bought as precious metal, marked or unmarked. If a piece might be solid gold with a worn mark, send a photo first; it is checked on arrival, and solid gold is valued on what the test finds.

Why does my "9ct" chain feel light?

If it is genuinely 9ct it will be heavy for its size. A light, hollow feel suggests rolled gold, hollow tube chain, or gold-plated brass. Checking it on arrival, with the weight and the wear points, tells you which.

Is gold-filled the same as rolled gold?

Effectively yes for valuation purposes. Gold-filled is the American term. The bonded-layer manufacturing method is the same idea.

Do you pay anything for snapped or kinked rolled-gold chain?

No. Rolled gold is not bought as precious metal, whatever its condition. If it arrives in a parcel, it is listed separately in the written offer at nil value and returned to you free with anything else you decline.

What does a "1/20 12ct" mark mean?

One twentieth of the metal’s weight is a 12ct gold layer bonded to the surface, which is about 2.5% fine gold. The other nineteen twentieths are base metal.

Can rolled gold be tested at home with acid?

Acid touches the surface only, so rolled gold reads as carat gold. That is the limitation of acid testing. XRF reads the surface too, so confirming solid versus rolled takes the XRF reading together with the weight, the density and a look at the wear points and cut edges.

Should I melt rolled gold myself?

No. Home melting will not separate the gold from the brass; that takes refining chemistry. GoldPaid does not buy rolled gold as metal, so for a signed or antique piece an auction house or dealer is the better route.

Not the question you had? The full GoldPaid FAQ covers the rest, from postal cover and ID checks to what happens if you decline the offer.

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Reference pages

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