Mining & Metals - Surrey Hills, Victoria, Australia
In particular, he founded Blue-Diamond Mines, which developed a diamond mining operation in Port Nolloth, South Africa. He also founded international diamond company Petra Diamonds, which in 1997, became the first diamond company to be listed on the London Stock Exchange's AIM market and which also became one of the largest independent diamond producers in Africa. Petra Diamonds has been listed on the Main Market of the London Stock Exchange since 2011.