Block Admission Return

Name of company:

Petra Diamonds Limited

Name of scheme:

Petra Diamonds Limited 2005 Share Option Plan

Period of return:

From 18 March 2011 to 20 September 2011

Number of shares not issued under scheme at the end of the last period:

6,485,472

Number of shares issued under scheme during period:

728,333

Number of shares cancelled under the scheme during period:

0

Balance under scheme not yet issued at end of period:

5,757,139

Number and class of shares admitted under scheme and the date of admission:

100,000 (14 June 2007)

3,000,000 (22 March 2010)

5,000,000 (18 March 2011)

Petra Diamonds, London

Telephone: +44 20 7318 0452

Cathy Malins

cathym@petradiamonds.com

Canaccord Genuity Limited

(NOMAD and Joint Broker)

Telephone: +44 20 7050 6500

Robert Finlay

rfinlay@canaccordgenuity.com

Andrew Chubb

achubb@canaccordgenuity.com

RBC Capital Markets

(Joint Broker)

Telephone: +44 20 7653 4000

Joshua Critchley

joshua.critchley@rbccm.com

Martin Eales

martin.eales@rbccm.com