June 10, 2011

Change of Registered Office Address

NOT FOR DISTRIBUTION IN THE UNITED STATES OR FOR DISSEMINATION TO US NEWS WIRE SERVICES.

10 June 2011

AIM: STEL

Stellar Diamonds plc

(“Stellar” or the “Company”)

Change of Registered Office Address

Stellar Diamonds plc, the London listed (AIM: STEL) diamond mining and exploration company focused on West Africa, announces it has changed its registered office address.

The new registered office address for Stellar is:

20 Southampton Street
London
WC2E 7QH
United Kingdom

About Stellar Diamonds plc

Stellar is a London (AIM: STEL) listed diamond mining and exploration company that has a portfolio of projects in West Africa. Stellar owns a 100% interest in four high-grade kimberlite projects that are the focus of exploration and development. In Guinea resource definition drilling is continuing on the diamondiferous Droujba kimberlite pipe project and bulk sampling is also underway on the high grade Bouro kimberlite dyke which is adjacent to the Company’s Mandala alluvial diamond mining operation. In Sierra Leone at Tongo a bulk sampling programme is ongoing on the high grade Dyke 1 and bulk sampling is planned on the Lion 5 dyke at the Kono kimberlite project.

For further information please contact the following or visit the Company’s website at www.stellar-diamonds.com.

Stellar Diamonds plc

Karl Smithson,Chief ExecutiveTel: +44 (0) 20 7257 2930

Northland Capital Partners Limited

Gavin Burnell, Edward Hutton

Charles Vaughan Tel: +44 (0) 20 7796 8800

Daniel Stewart & Company plc

Martin Lampshire, Oliver Rigby Tel: +44 (0) 20 7776 6550

Pelham Bell Pottinger

Charles Vivian / James MacFarlane Tel: +44 (0) 20 7861 3232