Company Presentation

AIM RELEASE 23 November 2007 DIAMONEX PRESENTATION AT MINES AND MONEY INVESTOR FORUM IN LONDON To view the presentation given by Mr Dan O'Neill at the Mines & Money Investor Forum in London on 21 November please click on the following link: Mines & Money Presentation The information in this report that relates to resource information and exploration results is based on information compiled by Mr DC O'Neill, who is a member of the Australian Institute of Geoscientists and a full time employee of DiamonEx Limited. Mr O'Neill has sufficient experience relevant to the styles of mineralisation and types of deposit under consideration and the activities which he is undertaking to qualify as a Competent Person as defined by the Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves. Mr O'Neill consents to the inclusion of his name in this report and to the issue of this report in the form and context in which it appears For further information, contact: Dan O'Neill (Managing Director) Greg King (Chairman) +61 7 37208944 (Office) +61 7 37208944 (Office) +61 7 37208988 (Fax) +61 7 37208988 (Fax) +61 407596942 (Mobile) +61 411473730 (Mobile) diamonex@diamonex.com.au (Email) diamonex@diamonex.com.au (Email) Will Souter Richard Hail RFC Corporate Finance Ltd (Nomad) Fox-Davies Capital Ltd (AIM Broker) Tel: +612 9250 0050 Telephone: +44(0) 20 7936 5200 Email: will.souter@rfc.com.au Email: Richard.Hail@fdcap.com About DiamonEx DiamonEx is a Brisbane, Australia-based specialist diamond company developing a 330,000 carat per year diamond mine based on an established 3.7 million carat resource at Lerala in eastern Botswana, within an area that produces 35% of the world's diamonds by value. J.P. Morgan Asset Management is the company's largest shareholder. DiamonEx is listed on the Australian Securities Exchange (ASX), the Botswana Stock Exchange (BSE) and the Alternative Investment Market (AIM) in London. ---END OF MESSAGE---