Specialized in Invisible Set Jewellery & Custom Designs

Trinity Designer Jewel is a fine jewellery manufacturer based in Bangkok's Bang Rak district, with over 20 years of experience crafting precision diamond and gemstone jewellery for clients across Europe, the USA, Asia, and the Middle East.
We work in 9k, 14k, and 18k gold with natural diamonds, offering fully custom design, small batch production, and no minimum order requirement.

What We Make

What We Make

Our workshop specialises in techniques that demand the highest level of skill — invisible set diamond jewellery, where stones sit flush with no visible metal between them, and pie-cut diamond designs, where precision-cut diamond segments create the illusion of a single large stone. We also produce custom engagement rings, gemstone jewellery, tennis bracelets, pendants, and earrings, all made to order in our Bangkok atelier.
  • Invisible Set Diamond Jewellery
  • Pie-Cut Diamond Rings & Jewellery
  • Custom Engagement & Bridal Rings
  • Natural & Lab-Grown Diamond Sourcing
  • Coloured Gemstone Jewellery
  • CAD Design & 3D Prototype Development
  • Small Batch & Large Scale Production
  • 9k, 14k & 18k Gold Manufacturing
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Why Clients Choose Trinity Designer Jewel

With over two decades of manufacturing experience in Bangkok, we work directly with private clients, jewellery retailers, and international brands who need consistent quality, transparent pricing, and reliable production.
Every piece is handcrafted by our team — no shortcuts.
We offer GIA and IGI certified diamonds on request, ethical gemstone sourcing, and secure international shipping to all major markets.

Visit Us for a Consultation in Bangkok

Our workshop and design studio are located at KBS Building, Soi Mahesak 3, Bang Rak, Bangkok — in the heart of Bangkok's jewellery district. Whether you are a private client, international buyer, or wholesale partner, we offer dedicated one-on-one consultations with our design team. Book your visit via WhatsApp or email us

Frequently Asked Questions

Q: Do you have a minimum order requirement?
No. We work with single custom pieces as well as large production runs. Whether you need one bespoke ring or a full collection, we can help.

Q: What materials 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 including sapphires, rubies, emeralds, and more.

Q: Can international buyers order from you?
Yes. We ship worldwide and work with clients across Europe, the USA, Australia, and the Middle East. All pieces are securely packaged and fully insured during transit.

Q: What makes invisible set jewellery different?
In invisible setting, gemstones are set into a metal framework with grooves cut into each stone, so they lock together with no visible prongs or metal between them. The result is a seamless surface of pure colour and brilliance. It is one of the most technically demanding settings in fine jewellery and a speciality of our workshop.