Official Graders Network

Trained by WGI.
Trusted worldwide.

Every Official Grader has completed WGI training and is authorised to issue WGI certificates for lab-grown jewellery from their own premises.

4 Countries7 Official Graders

Antwerp

WGI Antwerp

WGI Official Grader

+32 3 000 0000

Idar-Oberstein

WGI Idar-Oberstein

WGI Official Grader

+49 6781 000000

New York

WGI New York

WGI Official Grader

+1 212 000 0000

Essex,

Pembrook Products Limited

WGI Official Grader

London

dddd

WGI Official Grader

123123

WGI London

WGI Official Grader

+44 20 7405 0000

—

test grader

WGI Official Grader

Get in touch

Trained by WGI.Trusted worldwide.