KGK One
KGK jewelry showcase

A Legacy Woven Through Generations of Expertise

KGK's heritage of 120 years lies in the belief that trust is the only currency that never loses its value. Generational yet modern craftsmanship is reflected in buyer trust that has remained constant over a century. Every stone carved, every customer served, and every relationship built has been defined by the same commitment since 1905.

120+

Years
Experience

100%

Vertically integrated
supply

20+

Global
Offices

7

Manufacturing
plants

A craftsman inspecting a diamond at his workbench

Our Associates

  • Unique Designs
  • KGK
  • PCI Color
  • Belgium Diamonds
  • Martin Flyer
KGK workers at a manufacturing facility

Sustainable at Every Step

KGK's heritage of 120 years comes with an equally long commitment to doing business the right way. Sustainability and Traceability are not just positions we communicate, they are standards we operate to. Every stone that moves through KGK is ethically sourced and fully traceable from mine to market. For buyers who need to stand behind every piece they sell, that accountability is the foundation of working with KGK.

Read Sustainability Report
KGK One reception with the KGK ONE wordmark on the wall

All Your Needs, Handled by One Trusted Partner.

The most successful businesses are built on a foundation of reliable supply, institutional expertise, and a partner who understands every part of the trade as well as you do.

KGK One is built to deliver exactly that. One fully integrated partner across every category your business needs, backed by 120 years of expertise and operations across 15 countries. The supply chain infrastructure your business has been looking for.

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Dedicated Sales Team

Your own trade specialist, ready when you need them.

Global Distribution

A global network built to deliver wherever your business operates.

Traceability & Ethics

Responsible sourcing and full transparency across every category.