Top 30 Gemstone Custom Jewelry Manufacturers in UK

Searching for the top 30 gemstone custom jewelry manufacturers in the UK usually leads to the same dead end. You find outdated directories, thin lists with no real detail, and manufacturers who look impressive online but go quiet the moment you ask about minimum order quantities or stone certification.

We understand the frustration. At Maroth Jewels, we have spent more than a decade manufacturing custom gemstone jewellery for retailers, designers and private label brands across the United Kingdom and beyond. We know what UK buyers actually care about: consistent stone quality, honest lead times, hallmark-ready metal purity and a partner who answers WhatsApp messages the same day.

So we built the guide we wish existed. Below you will find 30 genuine manufacturers from the workshops of Birmingham's Jewellery Quarter and London's Hatton Garden to specialist studios across the UK and trusted overseas partners serving British brands. For each one, we cover where they are based, what they are known for and who they suit best.

How We Chose These 30 Manufacturers?

Most lists are copied from directories. Ours is not. We assessed each manufacturer against five practical criteria that matter when your brand's reputation is on the line:

1. Gemstone capability can they source, cut and set precious and semi-precious stones, not just cast metal?

2. Custom and private label services CAD design, sampling, logo engraving and bespoke production.

3. Accessibility for growing brands realistic minimum order quantities and transparent pricing.

4. Quality and compliance metal purity that meets UK hallmarking standards and ethical sourcing practices.

5. Reputation and longevity years in the trade, accreditations and standing within the industry.

In our experience at Maroth Jewels, a manufacturer is only as good as their last production run. Treat this list as your shortlist, then order samples before committing.

Top 30 Gemstone Custom Jewelry Manufacturers in the UK

1. Maroth Jewels

Yes, we are putting ourselves first and we will tell you exactly why, so you can judge for yourself.

Maroth Jewels is a custom gemstone jewellery manufacturer based in Jaipur, the gemstone-cutting capital of the world, serving retailers, designers and private label brands across the UK. We built our reputation on solving the exact problem UK buyers face: British workshop quality at prices that leave room for healthy margins.

Here is what working with us actually looks like:

●       Low MOQ: production starts from just 5–10 pieces per design, so startups and small brands can test collections without heavy inventory risk.

●       Full custom service: share a sketch, reference image or idea, and our team delivers CAD designs within 3–4 working days.

●       Materials: 925 sterling silver and solid gold in 9K, 14K, 18K, 22K and 24K, with plating options including gold vermeil, rose gold, rhodium and micron plating.

●       Gemstones: precious, semi-precious, lab-grown diamonds and natural diamonds cut and calibrated in-house in Jaipur.

●       Speed: samples in 25–30 days, bulk production in 30–40 days, and worldwide shipping to the UK in 4–7 days.

●       Brand protection: NDA agreements and brand logo engraving available on request, with 8,000+ existing designs to customise.

Best for: UK startups, e-commerce brands, retailers and designers who want intricate gemstone work, tiny MOQs and complete private label support.

Birmingham Jewellery Quarter Manufacturers

Birmingham's Jewellery Quarter has been the engine room of British jewellery making for over 250 years. If you want "Made in Britain" on your story, start here.

2. Hockley Mint

A giant of British manufacturing based in the heart of the Jewellery Quarter. Hockley Mint specialises in bridal jewellery and high-quality castings, with a comprehensive service running from CAD design to final polish. Their RJC accreditation is a genuine advantage for brands building an ethical positioning. Retailers often choose them for wedding bands engineered to sit flush against engagement rings.

Best for: established retailers building premium bridal ranges.

3. Domino Jewellery

A Birmingham powerhouse for fine gemstone and diamond jewellery, best known for its enormous range of mounts and semi-set pieces. Their design team tracks European trends closely, and their technical precision is respected across the trade. If your business sets its own stones, Domino's semi-set mounts save serious bench time.

Best for: jewellers who buy mounts and set stones in-house.

4. Weston Beamor

The go-to name for CAD, 3D printing and precision casting in the UK. If you have a complex gemstone design that other manufacturers say cannot be produced, Weston Beamor is usually the workshop that proves otherwise. They work with some of the biggest names in British jewellery and are ideal for prototyping.

Best for: designers developing technically demanding, one-off or prototype pieces.

5. Cooksongold

Most makers know Cooksongold for supplies, but their casting services and semi-finished ranges are equally strong. Operating from Birmingham, they are one of the UK's largest one-stop destinations for precious metals, findings and stone-setting components a lifeline for independent designers scaling up gradually.

Best for: independent makers and small studios sourcing materials and castings.

6. Charles Green & Son

Over 200 years of continuous British manufacturing heritage. Charles Green is best known for substantial, beautifully made wedding rings and signet rings many with gemstone and seal-engraved options. Every piece feels weighty and permanent, which suits jewellers selling on craftsmanship rather than price.

Best for: high street jewellers wanting classic, heritage British pieces.

7. W J Sutton Ltd

A historic Jewellery Quarter name with more than 130 years behind it, specialising in sterling silver and 9ct gold. Their handmade chains and traditional British designs remain a strength, and their accessible minimum orders make them friendly to newer businesses.

Best for: startups wanting traditional British silver and 9ct gold pieces.

8. Betts Metal Sales

Betts stands out for responsibly sourced metals, including their reclaimed silver recovered from medical waste a powerful story for eco-conscious brands. Alongside metals, they offer casting services and finished wedding bands.

Best for: sustainability-led brands that want a recycled-metal story.

9. Element Bespoke Jewellery

A Birmingham bespoke specialist with over 20 years of experience, working with skilled British goldsmiths in 18k gold and platinum. They take clients from initial idea through design, gemstone selection and finished piece, and also handle remodelling of inherited jewellery.

Best for: one-off bespoke commissions and remodelling projects.

10. Manna Jewellers

A family business trading in the Jewellery Quarter since 1977, with diamond and gemstone engagement rings designed and hand-finished in their on-site workshop. Buyers deal directly with the people making the jewellery no showroom middle layer.

Best for: direct-from-maker gemstone engagement and wedding rings.

London & Hatton Garden Manufacturers

Hatton Garden is the UK's most famous jewellery district over 300 businesses covering every stage of production, with the London Assay Office on the doorstep.

11. Holts Lapidary

Established in 1948 and home to one of the largest lapidary teams in the country. Holts supplies responsibly sourced fine gemstones including certified natural, unheated sapphires and offers on-site gemmological testing by FGA-certified experts. For brands where the stone is the story, few UK names carry more weight.

Best for: brands needing rare, certified or precision-cut coloured gemstones.

12. Ward Gemstones

A Hatton Garden name that grew from a small workshop into one of the UK's leading coloured gemstone specialists. If your collection is built around sapphires, emeralds, tourmalines or unusual stones, Ward is a sourcing partner worth knowing.

Best for: coloured-gemstone-led collections and designers seeking unusual stones.

13. Queensmith

An award-winning Hatton Garden jeweller crafting bespoke engagement rings entirely in-house increasingly rare in the district. Guided by qualified gemmologists, they work with natural and lab-grown diamonds plus coloured gemstones, with a Birmingham showroom serving the Midlands. Manufacturing typically takes four to five weeks.

Best for: bespoke bridal commissions with gemmologist-led guidance.

14. Tobi Gems

A master jeweller with more than 40 years at the bench and an on-site Hatton Garden workshop unusual in an area where much production is now outsourced. Bespoke pieces are designed and made under one roof, with a wide selection of precious gemstones and certified diamonds.

Best for: traditional handmade bespoke work with direct maker contact.

15. Hatton Garden Diamond

A bespoke specialist offering one of London's larger ranges of GIA-certified natural and lab-grown diamonds, alongside independently graded coloured gemstones with proof of origin. Their design-your-own process lets clients build from either the stone or the setting.

Best for: certificate-led diamond and gemstone commissions.

16. Simon Lewis Jewellery

A Hatton Garden artisan with 30 years in the industry, specialising in the design and manufacture of bespoke engagement rings. Clients receive personalised sketches and detailed 3D renderings, refined until the design is exactly right.

Best for: clients wanting a personal, artisan-led design journey.

17. Ingle & Rhode

One of London's pioneering ethical fine jewellers, known for traceable, responsibly sourced gemstones and Fairtrade gold. Their bespoke service creates engagement rings and fine jewellery for buyers who want provenance they can verify.

Best for: ethically driven buyers and brands prioritising traceability.

Southern England Specialists

18. Brown & Newirth

Hertfordshire-based masters of handmade wedding and engagement rings, each made to order in their own workshop. A lifetime guarantee reflects genuine confidence in the craftsmanship a strong selling point to pass on to your customers.

Best for: retailers stocking guaranteed, British-made bridal jewellery.

19. Harriet Kelsall Bespoke Jewellery

An award-winning bespoke design studio with locations in Hertfordshire and Cambridge, and a long-standing champion of ethical sourcing and Fairtrade gold. Their designers create individual gemstone pieces around each client's story.

Best for: design-led bespoke commissions with an ethical backbone.

Nationwide & Specialist Manufacturers

20. Crestfield

A UK custom manufacturer built for start-ups, small brands and independent designers, with minimum orders from around 30 pieces per design splittable across sizes. They work in stainless steel, sterling silver and gold, and can source and cut both precious and non-precious gemstones. Strategically placed facilities keep pricing competitive.

Best for: small brands producing their first proper collection run.

21. JewelCast

A leading UK casting specialist serving both volume production and one-off bespoke pieces. Advanced design and manufacturing processes deliver consistently high-standard castings for the trade.

Best for: designers and brands needing reliable, repeatable casting.

22. Rivermounts

Diamond-set jewellery specialists with deep inventory and fast turnaround. Their marketing support for retail partners is a genuine bonus useful if you are a growing store building out a core bridal range.

Best for: retailers wanting stocked diamond-set lines with quick delivery.

23. Gemex

A leading UK diamond jewellery manufacturer focused on engagement and eternity rings, with a sophisticated online ordering system for trade customers.

Best for: trade buyers ordering diamond bridal lines efficiently online.

24. Curteis

A family-run Shropshire manufacturer and a leader in precious metal chain making. Their factory pairs high-tech machinery with hand finishing, delivering dependable quality on high-volume orders.

Best for: volume chain and precious metal jewellery programmes.

25. CME Jewellery

A strong contender for modern silver jewellery, with a huge, frequently refreshed catalogue and competitive UK pricing. Popular with gift shops and boutique retailers needing fast-moving lines.

Best for: boutiques and gift retailers stocking contemporary silver.

26. Silver Jewellery Cavern

A Cornwall-based maker of sterling silver and gemstone jewellery with a distinctive bohemian, coastal aesthetic. Accessible minimums make them popular with independent boutiques.

Best for: independent boutiques with a boho or coastal customer base.

27. Andea Jewellery

Known for substantial, contemporary heavy silver jewellery with an exceptionally bright, durable finish. Their clean designs appeal to a quality-focused, more mature demographic.

Best for: premium contemporary silver collections.

28. Kurate Jewellery

A reliable partner offering a broad range of 9ct gold and silver jewellery across many styles. Their diversity suits general jewellery retailers needing one dependable supplier across categories.

Best for: general retailers wanting breadth from a single supplier.

29. LW Silver

A bespoke atelier producing remarkable handmade pieces, typically turned around in 10–14 days. Their designers help clients explore options with custom 3D jewellery designs, including gemstone and setting choices.

Best for: fast handmade bespoke pieces in silver.

30. Edward Flemming Jewellery

An ethical fine jewellery manufacturer holding Fairtrade Gold and Fairmined certifications still rare in the UK trade. Their gemstone work spans rubies, sapphires, emeralds, garnets, tourmalines, spinel and birthstones.

Best for: certified-ethical fine gemstone jewellery.

How to Choose a Gemstone Custom Jewellery Manufacturer in the UK?

After a decade of manufacturing for UK brands, here is the vetting process we recommend to every buyer including the ones who choose someone else.

1. Check gemstone sourcing and certification

Ask where stones come from and whether certification (GIA, IGI or gemmological testing) is available. A manufacturer who is vague about origin is a red flag.

2. Confirm real MOQs in writing

Many "low MOQ" claims collapse once you request a quote. Get the number per design, per size and per stone variation confirmed by email.

3. Ask for the gram weight of every sample

Some factories hollow out pieces to hit a price point. Comparing gram weight is the only fair way to compare two quotes.

4. Review the CAD process

A professional partner produces CAD renders before cutting any metal. At Maroth Jewels we deliver CAD in 3–4 working days; anything beyond a week suggests capacity problems.

5. Order and wear samples

Wear a sample for a week. Watch for plating wear, loose stones and flimsy clasps before you commit to a production run.

6. Verify hallmarking readiness

If you sell in the UK, your metal must survive assay testing (more on this below). Ask how the manufacturer guarantees purity.

7. Test communication speed

Send a technical question. If pre-sale replies take three days, imagine post-sale.

UK Hallmarking Rules Every Jewellery Brand Should Know

This is where many new brands get caught out. Under the UK Hallmarking Act, it is illegal to sell items described as gold, silver, platinum or palladium above certain weights without an official hallmark from one of the four UK Assay Offices London, Birmingham, Sheffield or Edinburgh.

The weight thresholds are: gold over 1 gram, silver over 7.78 grams, platinum over 0.5 grams and palladium over 1 gram. Anything above these limits must be assayed and hallmarked before sale in Great Britain.

What does this mean when choosing a manufacturer? Whether your pieces are made in Birmingham or Jaipur, the metal purity must be genuine under-karat gold will fail assay and cost you the entire batch. In our experience at Maroth Jewels, this is why serious overseas manufacturers work strictly to declared purities (925 silver, 9K–24K gold) and support clients through the UK hallmarking process. Ask any prospective partner how their pieces perform at assay. Their answer tells you everything.

UK-Based vs Overseas Manufacturers: An Honest Comparison

We manufacture in Jaipur, so we will be transparent about the trade-offs rather than pretending there are none.

The honest conclusion: heritage British workshops are superb for bespoke one-offs and "Made in Britain" positioning. For private label brands, e-commerce retailers and anyone whose margins matter, a specialist overseas partner with proper gemstone capability usually wins on price, MOQ flexibility and stone variety. Many successful UK brands use both British workshops for hero pieces, Jaipur for core collections.

Gemstones UK Buyers Are Requesting Most in 2026

Understanding demand helps you brief your manufacturer intelligently. Across our UK client orders, these stones dominate:

Sapphires remain the UK's favourite coloured stone, with teal and peach sapphires surging in bespoke engagement rings. Emeralds and rubies hold their place in heritage-style fine jewellery. Lab-grown diamonds continue to take share in bridal, offering size and clarity at accessible prices. Moissanite dominates the fashion-fine crossover. Among semi-precious stones, moonstone, London blue topaz, opal, aquamarine and morganite lead UK e-commerce collections, while birthstone jewellery remains the most reliable year-round personalisation seller.

A capable custom manufacturer should offer all of the above in calibrated sizes, with consistent colour matching across a production run ask to see batch photos before ordering.

Frequently Asked Questions

Who is the best gemstone custom jewelry manufacturer in the UK?

It depends on your needs. For heritage British bridal manufacturing, Hockley Mint and Charles Green lead. For rare stones, Holts Lapidary is exceptional. For low-MOQ custom gemstone jewellery with private label support, Maroth Jewels offers UK-market quality from 5–10 pieces per design with CAD in 3–4 days.

What is the typical MOQ for custom gemstone jewellery?

UK workshops typically require 30–100+ pieces per design. Specialist overseas manufacturers can be far more flexible at Maroth Jewels, MOQs start from 5–10 pieces depending on design, making sampling and small collection launches realistic for new brands.

How long does custom gemstone jewellery production take?

Expect 3–4 working days for CAD design, 25–30 days for samples and 30–40 days for bulk production. Shipping from overseas adds 4–7 days. UK workshops typically quote 4–6 weeks for bespoke pieces.

Do overseas-made pieces meet UK hallmarking requirements?

Yes provided the metal purity is genuine. Gold over 1g, silver over 7.78g, platinum over 0.5g and palladium over 1g must be hallmarked at a UK Assay Office before sale. Reputable manufacturers work to declared purities (925 silver, 9K–24K gold) that pass assay testing.

Should my brand offer natural or lab-grown gemstones?

Offer both if you can. Natural stones carry provenance stories and long-term value; lab-grown diamonds and sapphires deliver size and clarity at accessible price points. In 2026, most successful UK brands run lab-grown bridal lines alongside natural coloured-stone collections.

Can I put my own brand on manufactured jewellery?

Yes. Private label manufacturing includes your logo engraving, custom packaging and NDA protection so your designs stay exclusive. At Maroth Jewels, NDA agreements and brand logo engraving are available on request for every custom order.

Final Thoughts

The UK gemstone jewellery market rewards brands that get sourcing right. Choose a manufacturer purely on price and you inherit their quality problems; choose purely on prestige and your margins vanish. The 30 manufacturers above represent the strongest options we know across every budget, order size and style.

Our advice is simple: shortlist three, request samples from each, wear them for a week and compare gram weights, stone setting and finish side by side. The right partner will welcome that scrutiny.

And if you are looking for a manufacturing partner that combines Jaipur's gemstone-cutting heritage with UK-standard quality, MOQs from just 5–10 pieces and full private label support we would love to show you what we can do. Share your design, metal, plating, gemstone and quantity requirements with Maroth Jewels for a custom manufacturing quotation, and see the difference from your very first CAD.