The World Diamond Council welcomes nine new members


Founded in 2013 by the second and third generations of the Arslanian diamond family, whose first generation had first entered the business in 1951, the Arslanian Group is today a leading player in the international rough diamond trade. With its Antwerp headquarters a long-time WDC member, it is now joined by it office in the Dubai Multi-Commodities Center (DMCC). 

Over its years of operation, the Arslanian  Group has acquired direct and regular access to important rough supply sources, which it complements with central sorting and marketing facilities.

A member of the Responsible Jewellery Council, the company states that supply chain integrity, ethical sourcing, and traceability are embedded in its corporate strategies and are a fundamental part of its day-to-day functioning.


Founded in Paris, France, in 1862, B.A. Asscher is a supplier of diamonds and colored gemstones to leading jewelry brands, as well as other retailers and jewelry manufacturers.

Committed to an ethically and socially responsible trade, the company is a certified member of the Responsible Jewelry Council and in 2022 installed a carbon foot-printing program to reduce its environmental impact.


Constell Group is a leading manufacturing and consulting firm specialized in the diamond industry, offering tailored manufacturing and consultancy solutions for businesses and new entrants across the globe.

With origins in Worldwide Diamond Manufacturers Pvt. Ltd, a prominent diamond cutting, and polishing facility established in 1997 in Visakhapatnam, India, Constell Group operates multiple cutting-edge manufacturing facilities and a world-class sorting facility, providing sorting, valuation, and consultancy services to diamond mining, manufacturing, and retail companies.

Meir Boukris, Chairman, Constell Group

Carlos Fernandes, Chief Executive Officer, Constell Group

Eytan Maximov, Chief Technical Officer, Constell Group

The group’s impartial approach, devoid of diamond ownership, purchase, or sale, ensures a conflict-free operation, making it a trusted partner in the global diamond and jewellery sector.


Located at the DMCC (Dubai Multi Commodities Centre) in Dubai, Crodiam Consulting is an independent rough trading and consulting company established by Frank Govic, a specialist in start-up diamond mining operations and rough diamond marketing and sales. Starting out as a valuator and sales negotiator for the Argyle mine operations in Australia, he later served as Marketing Director at BHP Billiton Diamonds, where he was responsible for the valuation and sales of diamonds from the Ekati mine in Canada.

He established an independent rough trading and consulting company in Antwerp in 2010, and before setting up Crodiam, established GTD Consulting.


Founded in New York in 1976, Diamex is a manufacturer of polished diamonds, structured around the critical core values of its founders. Its president is Ronnie VanderLinden, who for eight years headed the Diamond Manufacturers and Importers Association of America and is President of the U.S. Jewelry Council. He also serves as Vice President of the World Diamond Council.

Providing jewelry consultations, appraisals and serving as a trusted resource for estate sales or private purchases, Diamex has served as an advisor to members of the diamond trade, international auction houses, and the U.S. State Department.

Ronnie VanderLinden, President, Diamex Inc.


Established in 2007, DN Diamonds is an Israeli diamond and jewelry manufacturing and trading company specializing in larger diamonds, from 3.00 carats and up, in every shape and color. It was founded by Nissim Zuaretz, a diamantaire with 25 years of experience in the business, who currently is President of the Israel Diamond Manufacturers Association.

Headquartered at Israel Diamond Exchange, the company also operates offices in Hong Kong, New York and Dubai, and in 2014 and 2021 was recognized as Israel’s Outstanding Diamond Exporter by the country’s Ministry of Economy. 

Nissim Zuaretz, CEO and Founder, DN Diamonds.


Based in Mumbai, India, Karshev Jewellery is a family-run, private jeweler offering its clients an entirely bespoke service. It is owned and operated by three generations of diamantaires, whose mission it is to uncover the most exquisite stones in the world and transform them into extraordinary pieces of jewelry.

Dhirendra Hirawat, Karshev Jewellery.

Karan Hirawat, Karshev Jewellery.


A fourth-generation diamantaire, Matthew Schamroth is a partner in M. Schamroth & Sons of New York. The company was founded at the turn of the 20th century in Antwerp, Belgium.

Matthew is an active member of the Executive Board of The Diamond Manufacturers & Importers Association (DMIA), and in 2019 created the Diamond Integrity Committee (DDIC) to protect and preserve the integrity of the diamond supply chain. It does so by standards for the screening of natural diamonds, to ensure they are not mixed with laboratory-grown diamonds and diamond simulants.

Matthew Schamroth..


Starting operations in 2013 and wholly owned by the government of Botswana, the Okavango Diamond Company, (ODC) is a rough diamond marketing and selling company that is the largest supplier to the market of exclusively Botswana-sourced goods. 

ODC has access to 25 percent of the run-of-mine production of Debswana, the diamond mining company jointly owned by the Botswana government and the De Beers Group. It currently sells in excess of 5 million carats per annum achieving revenues of $1 billion in 2022-2023. ODC is expected to have access to 30 percent of Debswana diamonds, which will see it selling over 7 million carats per year. 

Dr. Gape Kaboyakgosi, Board Chairperson, ODC

Mmetla Masire, Managing Director, ODC

With a transparent sales model, whereby prices are set by the market through an online bidding process, the company states that its mission is to support the ongoing transformation of Botswana into a leading rough-sourcing destination and to drive the citizen participation in the diamond industry.