Rockwell Diamonds to Release Fiscal 2008 Results on May 27, 2008

VANCOUVER, BRITISH COLUMBIA -- (MARKET WIRE) -- 05/23/08 -- Rockwell Diamonds Inc. ("Rockwell" or the "Company") (TSX: RDI)(OTCBB: RDIAF)(JSE: RDI) will release the results for the nine months ending February 29, 2008 (Fiscal 2008) after market close on Tuesday, May 27, 2008 and will host a telephone conference call on Wednesday, May 28 at 10:00 AM Eastern Time (7:00 AM Pacific; 4:00 PM Johannesburg) to discuss these results. The conference call may be accessed by dialing (877) 440-5803, or (719) 325-4879 internationally. A live and archived audio webcast will also be available at www.rockwelldiamonds.com.

The conference call will be archived for later playback until Wednesday, June 4, 2008 and can be accessed by dialing (888) 203-1112 in Canada and the United States, or (719) 457-0820 and using the passcode 9145049.

For further details on Rockwell Diamonds and its properties, please visit the Company's website at www.rockwelldiamonds.com or contact Investor Services at (604) 684-6365 or within North America at 1-800-667-2114.

John Bristow, President and CEO

Neither the TSX nor Johannesburg Stock Exchange accepts responsibility for the adequacy or accuracy of this release.

Contacts: Rockwell Diamonds Inc. Susie Bell Investor Services (604) 684-6365 or within North America at 1-800-667-2114 (604) 662-8956 (FAX) Website: www.rockwelldiamonds.com

2008-05-23 16:34:21 0369919 MARKETWIRE