Harry Kenyon-Slaney

Non-Executive Chairman

BSc Geology (Southampton University), International Executive Programme (INSEAD France)

Harry Kenyon-Slaney is currently a senior advisor to McKinsey & Co and has over 33 years of experience in the mining industry, principally with Rio Tinto. He is a geologist by training and his experience spans operations, marketing, projects, finance and business development. He has worked in South Africa, Australia and the UK. Harry is also a Partner at Audley Capital Advisors LLP, a member of the boards of directors of Bridon Bekaert Ropes Group and Schenck Process AG and a non-executive director of several private companies. Until 2015, Harry was a member of the Group Executive committee of Rio Tinto where he held the roles of CEO of Energy, and before that CEO of Diamonds and Minerals. Prior to this he variously led Rio Tinto’s global titanium dioxide business, was CEO of Rio Tinto’s listed subsidiary, Energy Resources of Australia Ltd, was GM Operations at Palabora Mining Company in South Africa and held senior marketing roles in copper, uranium and industrial minerals. He began his career as an underground geologist with Anglo American on the gold mines in South Africa.

Appointed

Harry was appointed as Chairman of the Board in June 2017.

Key skills and experience

Commercial and capital markets. Leadership of large and complex global mining and processing businesses. Public company board governance and government stakeholder engagement.

Board committee membership

Chairman of the Nominations Committee and a member of the Remuneration, Audit and HSSE Committees.

Michael Lynch-Bell

Non-Executive Director

BA Hons Economics and Accountancy (University of Sheffield); FCA of the ICAEW

Michael spent a 38-year career with Ernst & Young (EY) having led its Global Oil and Gas, UK IPO and Global Oil and Gas and Mining transaction advisory practices. He was a member of the assurance practice from 1974 to 1996 when he transferred to the Transaction Advisory Practice. He was also UK Alumni sponsor and a member of the firm’s EMEIA and Global Advisory Councils. He retired from EY as a partner in 2012 and continued as a consultant to the firm until November 2013. Michael is currently Deputy Chair, Senior Independent non-Executive Director and Nominations Committee Chair at Kaz Minerals Plc; Chair of Seven Energy International, Chair of the Audit Committee at Lenta Limited; and non-Executive Director of Barloworld Limited.

Appointed

Michael joined the Board in December 2015 and was appointed Senior Independent Director in November 2017.

Key skills and experience

Finance and capital markets; Oil and gas; Mining and metals.

Board committee membership

Chairman of the Audit and Remuneration Committees and a member of the Nomination and HSSE Committees.

Mike Brown

Non-Executive Director

B.Sc.Eng. Mining PR Eng (ECSA) Engineering (University of Witswatersrand), Strategic Executive Programme (London Business School)

Mike has over 35 years’ experience in the resources industry in operational, senior management, and director roles. He spent six years in Switzerland as the Managing Director Technical at Pala where he oversaw all technical aspects of the investments, including the risks associated with resource performance, project management, ramp up, operations, and the associated working capital and financial controls. Prior to joining Pala, Mike spent 21 years with De Beers in Southern Africa in various roles culminating in the post of Chief Operating Officer where he was accountable for five operating mines, including greenfield and brownfield growth projects. He also managed the restructuring at De Beers Consolidated Mines (DBCM) in 2005/2006 and again in 2009. Mike has overseen growth projects and building of mines in Namibia, South Africa, Sierra Leone, Vietnam and USA.

Appointed

Mike joined the Board in January 2018.

Key skills and experience

Operational, resource performance, project growth and finance

Board committee membership

Chairman of the HSSE Committee, member of the Audit, Remuneration and Nomination Committees

Johnny Velloza

Non-Executive Director

Bachelor's Degree in Mining & Mineral Engineering (University of Johannesburg), Bachelor's Degree in Business/Commerce, General (University of South Africa)

Johnny is a Mining Engineer with broad mining experience in both open pit and underground operations across Southern and East Africa, Chile and Australia. Johnny has worked in a number of different commodities including Iron Ore, Copper, Gold and Diamonds. Johnny has held senior operational management roles in large mining companies, including De Beers, AngloGold Ashanti and BHP Billiton. Since starting his career twenty-five years ago Johnny has gained experience in exploration, feasibility studies, opening new mines and running mines. Most recently prior to joining Gem Diamonds, Johnny held a General Manager role in the Pilbara region of Australia with BHP Billiton.

Appointed

Johnny joined Gem Diamonds as Chief Operating Officer in May 2016 and was appointed to the Board as an Executive Director in July 2018. Johnny resigned as Chief Operating Officer in September 2018 and was appointed to the Board as a non-Executive Director on 16 September 2018.

Key skills and experience

Mining industry; Operations; Commercial

Board committee membership

HSSE Committee.

Clifford Elphick

Chief Executive Officer

BCom (University of Cape Town); BCompt Hons (University of South Africa)

Clifford joined Anglo American Corporation in 1986 and was seconded to E. Oppenheimer and Son as Harry Oppenheimer’s personal assistant in 1988. In 1990, he was appointed Managing Director of E. Oppenheimer and Son, a position he held until leaving in December 2004. During that time, Clifford was also a Director of Central Holdings, Anglo American and DB Investments. Following the privatisation of De Beers in 2000, Clifford served on the De Beers Executive Committee. Clifford is also the non-Executive Chairman of Zanaga Iron Ore Co. Limited

Appointed

Clifford formed Gem Diamonds in July 2005.

Key skills and experience

Diamond and mining industries; Commercial and capital markets.

Board committee membership

Nominations Committee.

Michael Michael

Chief Financial Officer

BCom Hons (Rand Afrikaans University); CA(SA)

Michael Michael has over 20 years’ experience in financial management. He joined RSM Betty & Dickson (Audit Firm) in Johannesburg South Africa in January 1993 and became audit partner at the firm in March 2000. From August 2006 to February 2008 Michael was seconded to Gem Diamonds Limited to assist with the financial aspects of the Main London Listing including the financial reporting, management accounting and tax relating to the Initial Public Offering. In March 2008 Michael joined Gem Diamonds on a full-time basis as the Group Financial Manager. On 2 April 2013 he was promoted to the position of Chief Financial Officer.

Appointed

Michael joined Gem Diamonds in March 2008 and was appointed to the Board in April 2013.

Key skills and experience

Finance and capital markets; Diamond industry.

Glenn Turner

Chief Legal and Commercial Officer and Company Secretary

BA LLB (University of Cape Town); LLM (Cambridge)

Glenn was called to the Johannesburg Bar in 1987 where he spent 14 years practising as an advocate specialising in general commercial and competition law, and took silk in 2002. Glenn was appointed De Beers’ first General Counsel in 2002 and was also a member of the Executive Committee. Glenn was responsible for a number of key initiatives during his tenure, including overseeing De Beers’ re-entry into the USA.

Appointed

Glenn joined Gem Diamonds in May 2006 and served on the Board from April 2008 to November 2017. Glenn was appointed as the Company Secretary in January 2015

Key skills and experience

Diamond industry; Legal.

Board committee membership

HSSE Committee.

Brandon de Bruin

Chief Business Transformation Officer

Bachelor of Commerce degree (Economics and Business Economics) and a Bachelor of Laws degree from the University of the Witwatersrand, South Africa; qualified attorney in South Africa and solicitor in England and Wales

Brandon de Bruin joined Gem Diamonds from Clifford Chance LLP, one of the world's leading international law firms. Practicing in New York and London, he specialised in Debt and Equity Capital Markets and Corporate Finance. Brandon gained extensive commercial and legal experience in international corporate and finance transactions working for clients such as Citigroup, UBS, JPMorgan, ABN Amro, Bank of America, Lehman Brothers and Morgan Stanley. He also gained valuable experience in stock exchange listings in London, Luxembourg and New York and also in the UKLA (UK) and SEC (USA) rules and regulations. At Gem Diamonds, Brandon has been closely involved in numerous corporate and financial transactions and in the set-up and management of the Group's Sales, Marketing and Manufacturing division. More recently Brandon has been appointed as the Group's Chief Business Transformation Officer.

Appointed

Brandon joined Gem Diamonds in August 2007

Key skills and experience

Business Transformation; Sales, Marketing and Manufacturing; Legal and Commercial