Petra Diamonds (OTCMKTS:PDMDF) is an independent diamond mining group headquartered in Jersey, Channel Islands, with principal operations in southern Africa. The company specializes in the extraction, recovery and sale of rough diamonds, focusing on high-value stones from both open-pit and underground mining activities. Petra’s portfolio comprises the Finsch, Cullinan and Koffiefontein mines in South Africa, along with the Williamson mine in Tanzania, each of which contributes to its reputation for producing gem-quality diamonds of significant carat weight.
Since its incorporation in 1997, Petra Diamonds has pursued a strategy of acquiring and developing established diamond assets. Its flagship Cullinan mine is renowned for yielding some of the world’s most famous large white diamonds, while the Finsch mine is recognized for consistent production of top-quality stones. The Williamson mine, acquired in 2009, marked Petra’s entry into Tanzania and remains a key source of premium gem diamonds. The company’s technical expertise spans modern open-pit excavation as well as complex underground mining operations, supported by in-house geological and processing capabilities.
Petra offers its rough diamonds to a global clientele through sight sales and auctions held at its sorting and trading hubs in South Africa and Namibia. Its marketing strategy emphasizes long-term partnerships with leading diamantaires and jewelry manufacturers, ensuring transparent pricing and sustainable supply chains. Petra places strong emphasis on responsible mining practices, implementing environmental management systems, community development programs, and compliance with international standards such as the Kimberley Process Certification Scheme.
Under the leadership of Chief Executive Officer Sean Gilbertson, Petra Diamonds continues to explore opportunities to extend mine life and unlock further value through exploration licences in Botswana and potential expansions in existing operations. The company’s board and management team bring extensive industry experience and technical expertise in mining engineering, finance and diamond trading. With a focus on operational efficiency and careful cost management, Petra aims to maintain a balanced portfolio of high-margin assets positioned to benefit from long-term demand for gem-quality diamonds.
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