Established 2012 · A GLD Diamonds Manufacture

RGA Diamond

Precision cut in Chiang Mai. Crafted for the world's finest jewelers.

Discover the Craft

Origins

A factory built on precision.

Founded in 2012 in the rolling hills of Lamphun, Thailand, RGA Diamond is the dedicated cutting and polishing facility of GLD Diamonds. Built on the most advanced computer-aided diamond technologies and lean manufacturing principles, RGA owns and operates every step of the value chain — from the planning of a rough stone to the final inspection of a calibrated, polished diamond.

What makes RGA different is total control. Every diamond is cut, calibrated, and inspected in-house under uncompromising quality standards, ensuring rapid turnaround, absolute confidentiality, and a tailored experience for clients ranging from luxury maisons to independent designers.

  • Lamphun, Thailand State-of-the-art facility near Chiang Mai
  • Lean Manufacturing Optimized for speed without compromise
  • Vertically Integrated Owned by GLD Diamonds end-to-end
The RGA Diamond factory exterior — a modern curved-roof building in Lamphun, Thailand
The RGA facility, Lamphun.

The Craft

Manufacturing excellence, three pillars deep.

Computer-Aided Precision

Every stone is mapped, planned, and cut using the most advanced diamond technologies in the industry — squeezing maximum yield and brilliance from every rough.

Fancy Shape Specialists

From perfectly calibrated assortments to bespoke fancy cuts, RGA produces what the world's leading maisons and watchmakers ask for — at scale, on spec, on time.

Uncompromising QC

Every diamond is inspected from concept to final polish. 100% checked. Zero compromise. Traceable from rough through to your client's hand.

2012 Established
200+ Specialists today
350 Specialists by 2026
100% Inspected in-house
The RGA Diamond team — over eighty specialists gathered in front of the Lamphun factory

Heritage

A family legacy, four locations, one standard.

RGA's story begins with one man — Haim Giladi — who built his name in the diamond trade through integrity, precision, and a quiet obsession with detail. In 2010, alongside his three sons Ron, Gil, and Adi, he founded GLD Diamonds in Ramat Gan, Israel.

Two years later, in 2012, the family opened RGA — a state-of-the-art factory in Thailand designed from day one around advanced cutting technology and lean manufacturing. In 2013, GLD Creations followed, extending the family's craft into haute joaillerie and watchmaking.

"A legacy of craftsmanship. A future of excellence."

Trust & Responsibility

Certified. Traceable. Accountable.

RGA operates within the strictest international standards for responsible jewellery — the same standards trusted by the world's most prestigious maisons.

RJC Certified Member

Since August 2018 · Cert № 0000 5508

Certified by the Responsible Jewellery Council under the Code of Practices 2019 EU. Current certification valid through September 2027.

Kimberley Process

Active participant

Every rough diamond entering RGA is sourced in compliance with the Kimberley Process Certification Scheme, ensuring conflict-free origin.

World Diamond Council

Member through GLD Diamonds

Aligned with the WDC System of Warranties and the highest moral standards across both our Israel and Thailand operations.

Get in touch

Let's build something lasting.

For new partnerships, factory tours, or custom calibrated assortments, we'd love to hear from you. RGA serves jewelry maisons, watchmakers, and independent designers across Europe, the U.S., and Asia.

inquiries@glddiamonds.com