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Continue ShoppingFine jewellery manufacturing, Bangkok
Bespoke & Private Label Jewellery — Made in Bangkok
Your manufacturing partner for fine diamond and gemstone jewellery, specialising in invisible setting, pie-cut diamonds and bespoke designs.
Bang Rak, BangkokWorkshop and design studio in Bangkok’s jewellery district
Founded 2019Led by a team with over 20 years in the jewellery industry
No minimum orderSingle custom pieces through to large production runs
ConfidentialDesigns remain confidential, and we are happy to sign NDAs
Specialist technique
Invisible Setting
Stones sit flush, with no visible metal between them. Each one is calibré-cut and fitted by hand, so the surface reads as a single, unbroken field of colour.
It is among the most demanding techniques in fine jewellery, and a core speciality of our workshop.
Specialist technique
Pie-Cut & Mirage Diamonds
Several smaller diamonds are precision-cut, matched and set closely together to look like one larger stone. The result is a generous face-up presence at a more accessible price than a single diamond of the same size.
A pie-cut centre is made of several diamonds, not a single stone. Ask us for the actual diamond weight of any piece.
For retailers, designers and brands
Bespoke & Private Label Manufacturing
Bring a sketch, reference image or brief. We develop the design, manufacture it to your specification and supply it under your own brand, from a single piece to a full line.
All designs remain confidential, and we are happy to sign NDAs before samples or specifications are shared.
Selected collections
Made in Our Bangkok Atelier
Capabilities
Everything Under One Partner
CAD & Prototyping
Full CAD design and 3D prototype development in house. We develop technical drawings for your approval before production begins.
Gemstone Sourcing
Natural diamonds, lab-grown diamonds and coloured gemstones including sapphires, rubies and emeralds. GIA and IGI certified stones are available on request.
Manufacturing
9k, 14k and 18k gold, with materials specified per client requirements, in small batches or large production runs.
Manufacturing process
From Brief to Delivery
01
Share Your Idea
Send a sketch, reference image, mood board or description.
02
Design & Quotation
We review your brief, advise on materials and send a detailed quotation, with CAD renders for complex pieces.
03
Approval & Production
Regular gemstone and diamond pieces take 2–4 weeks from design approval. Invisible-set and pie-cut pieces, due to the precision required, take up to 8 weeks.
04
Worldwide Delivery
Pieces are quality-checked, securely packaged and fully insured during transit.
Why Trinity
Why Clients Choose Trinity Designer Jewel
Direct from Manufacturer
No agents. No middlemen. You deal directly with the people making your jewellery.
Hallmarked Gold
All gold is hallmarked, and materials can be specified per client requirements.
Hand-Selected Stones
Diamonds and gemstones are individually selected and matched, not pulled from bulk stock.
Remake Guarantee
If any piece does not meet the agreed specification on delivery, we remake it at no cost.
Confidential by Default
Designs remain confidential, with NDAs available before you share samples or specifications.
Visit Us in Bangkok
We welcome private clients, wholesale buyers and trade visitors — just let us know via WhatsApp, call or email when you're coming.
Client reviews
What Clients Say
I had an amazing experience with Trinity Designer Jewels! I brought them a picture of a diamond jewelry set that I wanted, and they brought it to life exactly as I envisioned. From the start, they were incredibly professional and attentive to my requirements. They created a 3D CAD design based on my picture, got my approval, and then used 3D printing for the casting process. Throughout, they kept me updated, confirming each step before moving forward. The final product was stunning, with high-quality diamonds and craftsmanship that exceeded my expectations. They also managed to deliver everything on time. If you're looking for a jeweler who can make custom pieces to your exact specifications, I highly recommend Trinity Designer Jewels!
Imran A, Bahrain
What really stands out about this company is how incredibly responsive they are. The quality is top-notch, and the pricing is very reasonable. The director was so attentive during our consultation and made sure every detail was right. They delivered exactly what I wanted, and the turnaround time was surprisingly fast.
보나왕, Korea
Amazing experience with Trinity on the creation of a new collection, they can do everything and product finish is always perfect 100% recommend
Matteo F, Germany
The absolute best jewelry company around. I use them for all my jewelry needs, from everyday pieces to once-in-a-lifetime gifts. I've had multiple items custom made and every single one has turned out perfect, with impeccable craftsmanship and top-quality materials.
Ghaz S, USA
I was looking for something classic, just wasn't sure what to choose. The team helped me narrow it down to diamond hoops, and I'm so glad I chose these diamond hoops. Timeless and super easy to pair with different outfits and honestly the kind of piece you can wear every day without thinking twice. Loved it!
Simran M, UAE
I had been looking for something different from my usual diamond jewellery and wanted to explore coloured stones this time. Came across them at the Bangkok jewellery fair, and loved their ruby collection. The owner was very helpful and easy to talk to which made the whole experience better! I did compare the prices with a few other stalls at the fair and theirs were definitely the best. The ruby earrings were also surprisingly lightweight and comfortable when I tried them on. Such a good find!
Anna J, France
Always get the best stuff here, Very friendly owner, get the best service
Maya P, Translated from Indonesian
Questions
Frequently Asked Questions
Do you have a minimum order quantity (MOQ)?
No. We work with single custom pieces for private clients as well as large production runs for retailers and brands. There is no minimum order requirement.
What are your production timelines?
Regular gemstone and diamond jewellery: 2 to 4 weeks from design approval. Invisible-set and pie-cut pieces, due to the technical precision required: up to 8 weeks. Rush orders can be discussed on a case by case basis.
Do you offer CAD design and prototype development?
Yes. We provide full CAD design and 3D prototype development in house. Clients can share reference images or concepts and our design team will develop technical drawings for approval before production begins.
Can you manufacture to our own designs or brand specifications?
Yes. We offer OEM and private label manufacturing for jewellery retailers, designers, and brands worldwide. All designs remain confidential and we are happy to sign NDAs prior to sharing samples or specifications.
Do you handle gemstone sourcing?
Yes. We source natural diamonds, lab-grown diamonds, and coloured gemstones including sapphires, rubies, and emeralds through trusted suppliers. GIA and IGI certified stones are available on request.
What materials and gold karats do you work with?
We manufacture in 9k, 14k, and 18k gold using natural earth-mined diamonds, lab-grown diamonds, and a wide range of coloured gemstones. All gold is hallmarked and materials can be specified per client requirements.
Do you ship internationally?
Yes. We ship worldwide to all major markets including Europe, the USA, Australia, and the Middle East. All shipments are securely packaged and fully insured during transit.
Can I visit your office in Bangkok?
Yes. We welcome private clients, wholesale buyers, and trade visitors at KBS Building, Soi Mahesak 3, Bang Rak, Bangkok. Just let us know via WhatsApp, call or email when you are coming so we can plan for your visit.
Discuss Your Project
Tell us what you would like to make. Share your brief, reference images and approximate quantity, and our team will get back to you.
sales@trinitydesignerjewel.com