Petra Diamonds Limited

("Petra" or the "Company")

Publication of Sustainability Report

Petra announces that its Sustainability Report for the financial year ended 30 June 2014 has been published and is available to view on the Company's website www.petradiamonds.com

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About Petra Diamonds Limited

Petra Diamonds is a leading independent diamond mining group and an increasingly important supplier of rough diamonds to the international market. The Company has interests in five producing mines: four in South Africa (Finsch, Cullinan, Koffiefontein and Kimberley Underground) and one in Tanzania (Williamson). It also maintains an exploration programme in Botswana.

Petra offers an exceptional growth profile, with a core objective to steadily increase annual production to 5 million carats by FY 2019. The Group has a major resource base in excess of 300 million carats.

Petra conducts all operations according to the highest ethical standards and will only operate in countries which are members of the Kimberley Process. Petra is quoted with a premium listing on the Main Market of the London Stock Exchange under the ticker 'PDL' and is a constituent of the FTSE 250 Index.

For more information, visit the Company's website at www.petradiamonds.com.