Sightholder directory




Head Office

Address IGC Group NV,
Schupstraat 15,
2018 Antwerp,

Sales Offices

Address IGC New York Inc.,
580 Fifth Avenue,
Suite 708, New York,
NY 10036
Christophe de Borrekens
Address IGC Shanghai Ltd.,
Room A519,
Shanghai Diamond Exchange Building,
1701 Shi Ji Avenue,
Pu Dong District,
Shanghai, 200120
Phone +86-2150158258
Address IGC Hong Kong Ltd,
1701 Ruttonjee Centre,
Dina House,
11 Duddell Street,
Central, Hong Kong
Contact Joris Graauwmans
Phone +852-2537-0288
Address IGC Brand Services Inc.,
67 East Madison 1816,
Chicago IL 60603,
Contact Donna DeLucia
Phone +1-312-372-0506

Short Facts

Year of establishment 1912
Number of employees 1,195
Number of offices 5
Number of factories 3

Group companies

  • IGC Group NV
  • IGC New York
  • IGC Brand Services (Chicago, USA)
  • IGC Hong Kong
  • IGC Shanghai
  • IGC Jewellery Services
  • Zebra Diamonds (Botswana)
  • SSL (Thailand)
  • VDC (Laos)


IGC Group NV


For over a century IGC Group has been delivering Belgian excellence in diamond polishing – IGC Group is a large Flemish diamond firm, which celebrated its centenary in 2012.  The company is known as an expert manufacturer in extremely high quality smalls and the largest manufacturer of fine made 8/8 in the world.  IGC Group is a strategic and preferred supplier to the main Swiss brand houses. We are able to meet the unbending requirements and severest QC standards of the prestigious watch industry.  At IGC, the make matters!  We are known for our top quality make, consistency and eye for detail in everything we do.  IGC Group has a special R&D department in Bangkok dedicated to proprietary cuts for the luxury industry, from design all the way through to manufacturing.  Our passion for excellence extends well beyond manufacturing into servicing our clientele. We are a highly service oriented company with representative offices in all the major diamond centres.  Thanks to our reliability, another of our company strengths, we enjoy an extremely loyal clientele across the world.  IGC Group offers a high quality Jewellery Manufacturing Service, which operates to the same high business standards that rule our diamond business.  This one-stop solution for medium to high-end diamond jewellery includes designing, prototyping, diamond selection, full production and QC of the jewellery piece.

Corporate Social Responsibility

IGC Group has a tradition of engaging with the local communities in which it works. We support local CSR projects to create and enhance sustainable income generation for disadvantaged groups of people. Also we support education for the young generation within our close working environment. The company supported relief efforts for flood victims of the 2004 Tsunami and the 2011 monsoon flooding relief projects in Thailand. In 2015 we inaugurated a new boat pier and a children’s library as a follow-up of the tsunami disaster relief project.

Core Business Activity

Wholesaler, Polished manufacturer and Jewellery manufacturer

Product Range Overview

Core Polished Diamonds

Core product offer:  Highly calibrated smalls and 8/8 from 400p/c to 30pts, IF-VS quality, D-G colour.  Certified pointers in Excellent make, VS+ quality.

Product related services:  Exact calibrated mm-sizes; detailed sorting; bagging & matching; certification; laser engraving; polished sourcing; custom made shapes (from design to manufacturing); stock keeping; ready-made layouts; just-in-time and overnight delivery; on-line ordering; polished training for customers’ staff.

Specialist Polished Diamonds

EXIRE©, The Ultimate Small Brilliant: The premium or top end of our full cut and melee production – small brilliants polished to a very high consistent make with maximum light reflection (mainly used in pave and bezel settings).

Diamond Jewellery

High quality diamond jewellery manufacturing service.

Polished Outcome





Below 7pts

Fancy shapes Fancy colours Proprietary or branded makes
  x x x x x   x

Additional Services

IGC Group offers its customers a fully-integrated jewellery manufacturing service. Diamond training and industry briefings are also at our customers’ disposal.