Diamond supplier to independent jewellers
Supply certified and matched diamonds to small jewellers and makers who don't hold their own stock.
- £5k-25k
- Part-time
- From home
Estimates for a small start in the UK, not guarantees.
Official data
3,186 UK companies in this field, 40% registered in the last 2 years
SIC 46480 “Wholesale of watches and jewellery”. Source: Companies House, November 2026.
What it is
A trade dealer who sources loose diamonds, including calibrated and matched stones, for independent jewellers, bespoke makers and small retailers. You hold a modest range and source specific stones on request.
Your first three steps
- Make a list of independent jewellers and makers in your region and learn what stones they buy
- Agree credit or memo terms with wholesalers so you can offer a range without tying up all your cash
- Visit trade contacts with a small selection of certified stones and a clear price list
Who pays
Independent jewellers, designer-makers, small online jewellery brands and repair workshops.
How it makes money
You sell stones at a trade margin over your buying price. Regular repeat orders and sourcing requests are the main income.
Skills that help
- Strong diamond grading knowledge
- Negotiating with suppliers
- Building long-term trade relationships
Watch out for
- Anti-money laundering rules: check whether you need to register with HMRC and what customer checks apply
- Trade credit risk, so check how you handle late payment and returns on approval stones
- Check sourcing, sanctions and disclosure rules for natural, lab-grown and treated diamonds
- Stock and transit insurance, and secure delivery when posting or couriering high-value items
- Margins can be thin and prices move, so avoid holding more stock than you can fund
Deep research report · UK
Everything you need to start: diamond supplier to independent jewellers
Researched with live web search for United Kingdom: real startup prices, the licences and rules, what others charge, a break-even example, how to find your first customers and a 30-day launch plan. With sources.
- Startup costs with real prices
- Licences, registration and rules
- Pricing: what others charge
- Break-even example
- Finding your first customers
- 30-day launch plan
- Risks and how to reduce them
Questions people ask
How much does it cost to start a diamond supply business?
Estimates suggest startup costs are typically around £5,000 to £25,000, depending on the range of stones you hold and how you fund stock. Sourcing stones on request rather than holding them may change what you need.
How much can a trade diamond supplier earn?
Estimates suggest monthly revenue is typically around £3,000 to £15,000, depending on the number of jewellers you supply and the value of the stones sold. The estimates start from around 15 hours a week.
What should I check before supplying diamonds to the trade?
Check whether you need to register with HMRC and what customer checks apply under anti-money laundering rules. Also check sourcing, sanctions and disclosure rules, how you handle late payment and returns, and stock and transit insurance.
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