Intro: Selling gold jewellery in the UK without a UK hallmark is a criminal offence — and almost no Indian founder budgets the time or the cost for it. Jewellery is one of the highest-margin categories to take into the UK, and also one where the surprises are operational rather than obvious: the product is ready, the ads are built, and then an assay requirement nobody planned for sits between the stock and the first sale. Here's what actually breaks when a jewellery brand launches in the UK, starting with the one that's a matter of law.
Hallmarking is the law, not a nicety
Under the Hallmarking Act 1973, anyone selling an article described as gold, silver, platinum or palladium in the course of a trade or business must ensure it carries a recognised UK hallmark once it is over the exemption weight for that metal. This is not a quality badge you opt into later — it is a legal requirement overseen by the British Hallmarking Council and the four UK assay offices, and describing or supplying an un-hallmarked precious-metal article above the weight is a criminal offence, not a paperwork afterthought.
Two things catch Indian brands specifically. First, the rule applies to imports and to online sellers, not only to UK-based makers — shipping finished jewellery from Jaipur or Mumbai to a UK customer does not exempt you; the article still needs a UK hallmark (or a recognised Convention Common Control Mark) before it is sold as precious metal. Second, the obligation sits with whoever sells it in the course of business, so a D2C brand listing directly to UK consumers carries it in full — there is no maker to hide behind.
The exemption weights — and the one odd number
Hallmarking kicks in at a weight threshold that differs by metal. Below the weight, an article can be sold described as the metal without a hallmark; at or above it, the hallmark is mandatory.
| Metal | Hallmark required at / above | Below this weight |
|---|---|---|
| Gold | 1 g | Exempt |
| Silver | 7.78 g | Exempt |
| Platinum | 0.5 g | Exempt |
| Palladium | 1 g | Exempt |
The silver figure genuinely is 7.78 grams — a historic troy-weight threshold, not a typo. These are low bars: a pair of gold studs or a slim silver chain clears them easily, so for most fine-jewellery ranges the question isn't whether you need to hallmark, it's how the assay step fits your timeline and cost. The Edinburgh Assay Office and its three counterparts publish the current thresholds and fees.
The four assay offices, and the time to build in
A UK hallmark is physically struck (or laser-marked) by one of four statutory assay offices — London (the Goldsmiths' Company), Birmingham, Sheffield and Edinburgh. You register as a sponsor, submit your articles, and they test the metal and apply the mark. That is a real step with a real turnaround and a per-item cost, and it has to happen before the goods are offered for sale — so it belongs in your launch date, not in a scramble the week before a drop.
For an importing brand there's an extra wrinkle: jewellery arriving from India either needs a UK hallmark applied here, or it must already carry a recognised Convention Common Control Mark from a signatory country. Plan the assay leg into your inbound logistics the same way you plan customs — because, like customs, it gates whether the stock can legally be sold once it lands. If you're importing, it sits right next to your EORI and UK import setup.
What else breaks when a jewellery brand launches in the UK
Hallmarking is the one that's a matter of law. The rest are the operational surprises that quietly decide whether the range actually sells:
- Trust carries the whole sale. Nobody buys a £200 ring from a brand they've never heard of on a flat product shot. Reviews, a clear returns policy, secure checkout and real photography move more units than any ad — build the social proof before you scale spend (more in our guide to UK localisation).
- Sizing doesn't translate. UK ring sizes run on letters (A–Z), not the numbers or millimetre diameters used in India. Publish a UK conversion and a proper sizing guide, or watch returns climb on fit alone.
- Returns and loss get expensive. High-value parcels need tracked, insured shipping both ways. Put the reverse leg and the insurance into your unit economics from the start, not into hope.
- The occasion shifts. Diaspora buyers shop your bridal and festival gold; mainstream UK buyers want everyday, giftable pieces around Christmas and Valentine's. One catalogue rarely serves both well — decide which buyer you're merchandising to first.
For jewellery, compliance and trust decide the launch — not the ad budget.
What to sort before you ship
- Confirm which pieces cross the exemption weight and build assay time and per-item cost into the launch date — treat it like customs, because it gates sale the same way.
- Register as a sponsor with an assay office (or confirm your supplier's articles already carry a recognised Convention mark) before your first inbound shipment.
- Fix sizing, returns and insured logistics before ad spend — in high-value jewellery those three decide margin more than CPMs do. For where to actually list, see the UK jewellery marketplaces built for the category, and for the tax side, UK VAT for Indian D2C brands.
Jewellery is one of the highest-margin categories we take into the UK — and the reason it stalls is almost never the product. It's the assay step nobody budgeted, the sizing guide that wasn't there, the insured reverse leg that wasn't priced. We handle the compliance and entity groundwork — the hallmarking route, importer setup and VAT registration — so the surprises are ours to absorb, not yours to discover at the border. If the UK is on your map, see how it works or apply for early access.