Our global portfolio demonstrates our persistence in discovery to enable progress for early-staged projects. The Group achieves this through good ideas, judicious investment and the teamwork of skilled people working for shared benefit.

Our vision is to always strive for positive change, persistently using the resources at our disposal to make discoveries and capitalise on them for shared benefit.

Our strategy is to invest for social and financial return where the credibility of participants can be demonstrated and where there is absolute clarity about the nature of the opportunity.

Our people are independent thinkers who are curious by nature. They share a view that the discoveries which lead to lasting progress are often made outside large corporate operating structures. Our devolved approach to managing assets  succeeds because individuals are trusted, supported and encouraged to endeavour and to succeed.

Our culture is not prescribed. But to each member of our team it is immediately obvious that our range of origins and professional backgrounds works to our mutual benefit.

Case Studies

Our history

Jean-Raymond Boulle started his career at the De Beers Diamond Trading Company London (“DTC”) where he worked for ten years, in Zaire, Sierra Leone and Belgium. Thereafter he established the Jean Boulle Group.

Jean-Raymond Boulle is also the founder of Diamond Fields Resources Inc, Adastra Minerals Inc, and Titanium Resources Group Ltd; with deposits of nickel, cobalt, copper, zinc, titanium and diamonds.

Jean-Raymond Boulle is also a member of the Board of the Corporate Council on Africa (‘CCA’). He has maintained a longstanding involvement with the CCA since it was established in 1993 to promote business and investment between the United States administration and the administrations of the countries of Africa.

Jean-Raymond Boulle was chairman, founder and CEO as well as a major shareholder of Diamond Fields (DFR Gold Inc. TSE:DFR) which commenced trading on the Canadian Stock Exchange on April 6, 1993 and, in late 1994, discovered nickel, copper and cobalt ore bodies at Voisey’s Bay Mine in Labrador, Canada. The Voisey’s Bay Mine deposit was then estimated to contain 141 million tonnes at 1.6% nickel.

Jean-Raymond Boulle was awarded Sierra Leone’s highest order of merit, the Commander of the Order of the Rokel, by the President of the Republic of Sierra Leone in recognition of the contribution that Mr Boulle made to Sierra Leone by restarting its economy.

In 1996, Diamond Fields Resources and the Voisey’s Bay Nickel Mine was purchased by Inco for C$4.3 billion.

2026

VDyne receives FDA approval to initiate pivotal trial

2026

Jean-Raymond Boulle awarded Grand Officer of the Order of the Star and Key of the Indian Ocean

2026

Mike Buck appointed as VDyne Chairman and CEO

2026

U.S. Green Magnesium selected as U.S. DoE industry project partner

2026

JBDM completes exploration and advances Cacuílo mining application

2025

Mauritius tohost CCA’s U.S.- Africa Business Summit 2026

2025

Government approves Greenland Anorthosite Mining EIA and SIA reports

2025

Tendyne US FDA approval follows Abbott’s US$400 M acquisition

2025

Greenland Anorthosite Mining awarded mining licence

2025

Spirit Resources announces C$4m Star Diamond Corporation investment

2025

JBDM and ENDIAMA invest in Angola’s N’Dumba diamond concession

2025

Giant Mineral Fields enters Zambian copper exploration partnership

2024

Omnicane and IFC sign Collaboration Agreement

2024

Jean-Raymond Boulle appointed Vice CCA Board Chairman

2023

VDYNE international study and FDA Breakthrough Device Designation

2022

The Group receives US$47 million investment it its proprietary VDYNE technology

2022

Greenland Anorthosite Mining honoured with the Prospector and Developer of the Year by the Ministry of Mineral Resources

2021

Launch of Boulle SEI Awards for Outstanding Progress in Life and Health Sciences

2021

Jean Boulle joins Board of Corporate Council on Africa

2021

VDYNE obtains $21 million for heart valve replacement technology

2020

The Group partners with SISA to advance Greenland Anorthosite Mining

2020

Tendyne heart valve receives CE Mark approval from the EU

2015

Jean Boulle Medtech’s Tendyne acquired by the Abbott Laboratories

2014

Jean Boulle Medtech’s Tendyne successfully implants Human Heart Mitral Valve

2007

Jean Raymond Boulle awarded Commander of the Order of the Rokel

2006

Adastra Minerals purchased by First Quantum Minerals

2005

Titanium Resources Group listed on the London Stock Exchange AIM

2001

Acquisition of Sierra Rutile Project and Sierra Minerals Bauxite Mine

1996

Voisey’s Bay is sold to Inco

1995

Founded American Mineral Fields (later renamed Adastra Minerals)