Council of Management
Menachem Prager is the Principal of a successful diamond company and believes in the highest standards of ethics. He has been a member of the London Diamond Bourse for thirty eight years, and has served as President of the LDB and on the World Federation of Diamond Bourse’s International arbitration panel.
He was born in Antwerp, Belgium into a diamond family, where he learned to cleave rough diamonds. After his arrival in the UK, he turned his skills first towards semi-precious stones, then polished diamonds, and specialises in rounds, as well as fancy-cut diamonds.
Paul Koppelman entered the diamond trade in 1970 after graduating in Political Philosophy and Government and Law. He spent two and a half years learning diamond cleaving and diamond polishing before joining the family business which dealt mainly in rough diamonds. Paul broadened the business into industrial diamonds.
He now specialises in Rough Diamonds under one carat as well as Diamond Powders and a completely full range of Industrial Diamonds. Besides his main office in London, his company also has an office in the Diamond Bourse in Antwerp to assist his international business as 90% of the turnover are exports.
In 1978 he was first elected to the committee of the London Diamond Club and ended up in 1993 as its Financial Director, prior to its amalgamation with the London Diamond Bourse. Following the merger in 1995 he was joint treasurer of the London Bourse and Club till 1998.
In 1995 he was responsible for compiling the rules of the two combined Bourses and has held that responsibility for the last twenty-three years.
In 2002 Paul was instrumental in helping Clive Wright of the Government Diamond Office draw up the KP regulations, concerning the Kimberley Process in the UK. Since then he has been the member of the council of management on the LDB with special responsibility for the Kimberley Process in the UK.
Having embarked on a career in the jewellery trade in 1981, Peter has been involved in the wholesale, manufacturing and retail sides of the industry. He started in Hatton Garden working for a fine quality manufacturing wholesale company on the production side which led to a career in retail in the West End for Cartier and Bulgari. Having graduated from the G.I.A. in 1994, he decided to ‘go it alone’ and subsequently embarked on a career of Diamond broking and undertaking commissions of fine jewellery.
Charles has worked in his long-established family wholesale jewellery business D. I. Silverton Ltd for almost 10 years and has specialised in the sorting and grading of polished diamonds in all shapes and sizes. He was taught the fundamentals of diamond grading by his father David who has worked in the industry for nearly 50 years and has subsequently built on that knowledge through practical application and a keen eye for detail. He now sells loose polished diamonds and precious gemstones, as well as fine jewellery to retail and working jewellers throughout the UK, with a special focus on finely matched pairs, sets and layout for manufacturing.
Charles has been a member of the London Diamond Bourse for 3 years and now travels nationally and internationally both buying and selling diamonds and precious gemstones as a director of the business from their original Leeds office and from the London Diamond Bourse.
David Troostwyk began his career in Antwerp working for several Sightholders and then going on to establish the first online electronic diamond exchange. He returned to his native UK in 2011 to set up Salotro, a diamond trading company. The same year he joined the London Diamond Bourse and The Young Diamantaires Group. His extensive expertise cover many levels of the diamond pipeline and he uses this experience to implement initiatives to bring through the next generation of diamantaires.
Kathy has worked in the gemstone business for over 20 years. She emigrated to Canada as a child in 1965, settling in the gold mining town of Red Lake, northwest Ontario and later in the diamond province of Guyana and then in South Africa, returning to the UK in 1974. Through the family gemstone business she has successfully marketed the Nyala Rubyᵀᴹ from the Chimwadzulu mine in Malawi. She buys stones from source and has a working relationship with Columbia Gem House of the USA, a leading proponent of ethical sourcing and distribution. She is a distributor for CanadaMark diamonds from the Dominion Diamond Corporation. Her client list includes wholesale and retail jewellers committed to fair trade principles. She is a member of Women in Mining. She assists her father, David Hargreaves, a long-standing mining engineer in the preparation and presentation of consultancy reports on gemstone mines worldwide.
Jacqui is an award winning independent jeweller who has specialised in producing unique and personalised fine jewellery since 2006. A qualified gemmologist and diamond specialist, Jacqui trained with Gem-A and was awarded the prestigious Deeks Diamond Prize in 2008. Her experience also includes an internship with the Diamond Trading Company (formerly the sales and marketing subsidiary of De Beers) which provided unique and valuable experiences which included sorting rough and polished diamonds, rough diamond valuation, rough to polished strategy, and studying the diamond pipeline.
Work in London, Amsterdam and Antwerp was instrumental in developing an extensive network of exceptional industry contacts which enable her to source the finest diamonds and gems for the most discerning of clients. All production is undertaken in London, and her network includes the finest local artisans with sublime production skills. She has also nurtured relationships with suppliers of ethically sourced gemstones which have accountable and traceable supply chains.
In September 2020, Jacqui was shortlisted as a finalist in the Best Business Women Awards, and in January 2021 was named as one of the UK’s most 100 inspirational female entrepreneurs by Small Business Britain’s f:Entrepreneur “#ialso100″ campaign.