re: Appointment

Petra Diamonds Ld
22 April 2008


22 April 2008


                             Petra Diamonds Limited


               Appointment of BMO Capital Markets as Joint Broker



Petra Diamonds Limited ('Petra' or 'the Company'), the international diamond
mining group, announces the appointment of BMO Capital Markets as Joint Broker
to the Company with immediate effect.


This appointment is a further step in the development of Petra's corporate
strategy as the Company seeks to widen and diversify its investor base.


BMO Capital Markets is one of the leading investment banks operating in the
global metals and mining sector. BMO Capital Markets is a member of BMO
Financial Group (TSX, NYSE: BMO), one of the largest diversified financial
services providers in North America with total assets of US$375 billion and more
than 36,000 employees.


BMO Capital Markets is a member of the following global stock exchanges: AIM and
the London Stock Exchange, the Toronto Stock Exchange, the TSX Venture Exchange,
NYSE, NASDAQ and the American Stock Exchange.


Collins Stewart Europe Limited is Nominated Adviser and Joint Broker to Petra.



For further information, please contact:
Cathy Malins                      Telephone: [phone]
Petra Diamonds, London

Julian Walker / Harriet Pask           Telephone: [phone]
Hogarth Partnership Limited

Adrian Hadden                      Telephone: [phone]
Collins Stewart, London

William Smith                         Telephone: [phone]
BMO Capital Markets, London



Ends



About Petra Diamonds

Petra Diamonds is an international diamond mining group with a balanced
portfolio combining major producing mines, world class exploration assets and a
cutting and polishing business.


With operations in South Africa, Angola, Botswana and Sierra Leone, Petra's
objective remains to develop its stature as a leading diamond producer in all of
the countries in which it operates. In South Africa, Petra has four producing
mines and recently reached agreements to acquire a further two mines from De
Beers (Cullinan and Kimberley Underground).


The Company is on track to increase its annual production from 180,000 carats in
the year to June 2007 to over 400,000 carats in the year to June 2009 and is
targeting annual production of over 1 million carats thereafter.


Complementing the Group's production is an exploration and development portfolio
spread across some of the world's most prospective diamond fields. In Angola,
Petra is developing its world class Alto Cuilo and neighbouring Luangue projects
in two separate joint ventures with BHP Billiton. In Botswana, Petra has
established the largest exploration holding in the country, where it believes
that modern exploration techniques will hold the key to the discovery of new,
major kimberlites. In Sierra Leone, Petra is developing a fissure operation and
test work to date indicates the potential for economic operations.


The Petra group now employs some 3,000 people in Africa and over the last 10
years the Company has developed a range of social initiatives which continue to
make a meaningful impact upon the lives of employees and surrounding
communities. Petra's focus remains upon sustainable development, via educational
programmes and skills transfer, to ensure a broad based approach with a lasting
legacy, and all operations are carried out with the highest regard for the
environment according to best practice.


For further information, please visit www.petradiamonds.com




                      This information is provided by RNS
            The company news service from the London Stock Exchange