Publication of Sustainability Report

30 October 2017

Petra Diamonds Limited

("Petra" or "the Company")

Publication of Sustainability Report

Petra Diamonds Limited announces that its 2017 Sustainability Report has been published and is available to view on the Company's website at www.petradiamonds.com/investors/results-reports/.

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For further information, please contact:

Petra Diamonds, London Telephone: +44 20 7494 8203

Cathy Malins [email protected] 

Buchanan Telephone: +44 20 7466 5000

(PR Adviser)

Bobby Morse [email protected]

Anna Michniewicz [email protected]

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 operations: three underground mines in South Africa (Finsch, Cullinan and Koffiefontein), the Kimberley Ekapa Mining joint venture (including the Kimberley Underground mine and extensive tailings retreatment operations) and one open pit mine in Tanzania (Williamson). It also maintains an exploration programme in Botswana and South Africa.

Petra has a core objective to steadily increase annual production to 5.0 - 5.3 million from FY 2019 onwards. The Group has a significant 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 FTSE4Good Index. For more information, visit www.petradiamonds.com.