Petra Diamonds Ltd. engages in supplying rough diamonds to the international market. The firm operates through the following segments: Mining and Exploration. The Mining segment engages in the extraction and sale of rough diamonds from mining operations in South Africa and Tanzania. The Exploration segment consists of exploration activities in Botswana and South Africa. The company was founded by Adonis Pouroulis on March 25, 1997 and is headquartered in London, the United Kingdom.