Notice of FY 2016 Trading Update & Guidance Update

Petra Diamonds Limited

("Petra" or the "Company")

Notice of FY 2016 Trading Update and Guidance Update

Petra Diamonds Limited announces that its forthcoming Trading Update (unaudited) for the year ended 30 June 2016 ("FY 2016") will be released on Monday 25 July 2016, ahead of its Preliminary Results for the year, which will be released on 19 September 2016. Petra will also release market guidance for the year to 30 June 2017 ("FY 2017") and high level guidance for the period thereafter to the end of the year to 30 June 2019 ("FY 2019") on the same day.

A conference call to discuss the updates with investors and analysts will be hosted at 9:30am BST on 25 July 2016 and a shorter call for international investors will be hosted later in the day at 4:30pm BST. Details of these calls will be included in the Trading Update announcement and will be available on the Company's website.

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For further information, please contact:

Petra Diamonds, London Telephone: +44 20 7494 8203

Cathy Malins [email protected]

Salisha Ilyas [email protected]

Buchanan Telephone: +44 20 7466 5000

(PR Adviser)

Bobby Morse [email protected]

Anna Michniewicz [email protected]

RBC Capital Markets Telephone: +44 20 7653 4000

(Joint Broker)

Matthew Coakes [email protected]

Jonathan Hardy [email protected]

Barclays Telephone: +44 20 7623 2323

(Joint Broker)

Bertie Whitehead [email protected]

Marcus Jackson [email protected]

BMO Capital Markets Telephone: +44 20 7236 1010

(Joint Broker)

Jeffrey Couch [email protected]

Neil Haycock [email protected]

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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 six producing operations: four underground mines in South Africa (Finsch, Cullinan, Koffiefontein and Kimberley Underground), extensive tailings operations in Kimberley (via its interest in the Kimberley Mines) and one open pit mine in Tanzania (Williamson). It also maintains an exploration programme in Botswana.

Petra has a core objective to steadily increase annual production to ca. 5 million carats by FY 2019. The Group has a significant resource base of ca. 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 the Company's website at www.petradiamonds.com/.