Rockwell Estimates Three Month Earnings

Rockwell to Release Q1 Results on July 15, 2008

July 11, 2008, Vancouver, BC, Rockwell Diamonds Inc. (“Rockwell” or the “Company”) (TSX: RDI; JSE: RDI; OTCBB: RDIAF) advises shareholders that earnings per share for the three month period ending May 31, 2008, is expected to show a loss of CDN$0.003 per share compared to the loss of CDN$0.03 for the comparative period ended May 31, 2007. Basic and fully diluted per share loss figures will be included in the definitive statements.

The financial information on which this trading statement is based has not been reviewed or reported on by the Company’s auditors. The unaudited results for the period ended May 31, 2008 are expected to be published on July 15, 2008.

The Company will host a telephone conference call on Wednesday, July 16 at 10:00 a.m. Eastern Time (7:00 a.m. Pacific; 4:00 p.m. Johannesburg) to discuss these results. The conference call may be accessed by dialing (877) 397-0291, or (719) 325-4924 internationally. A live and archived audio webcast will also be available at on the Company’s website at

The conference call will be archived for later playback until Wednesday, July 23, 2008 and can be accessed by dialing (888) 203-1112 in Canada and the United States, or (719) 457-0820 and using the passcode 9274896.

For further details on Rockwell Diamonds Inc., please visit our website or contact Investor Services at (604) 684-6365 or within North America at 1-800-667-2114.

John Bristow
President and CEO

No regulatory authority has approved or disapproved the information contained in this news release.
Forward Looking Statement

This release includes certain statements that may be deemed “forward-looking statements”. Other than statements of historical fact all statements in this release that address future production, reserve or resource potential, exploration drilling, exploitation activities and events or developments that Rockwell expects are forward-looking statements. Although Rockwell believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in the forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include market prices, exploitation and exploration successes, changes in and the effect of government policies regarding mining and natural resource exploration and exploitation, availability of capital and financing, and general economic, market or business conditions. Investors are cautioned that any such statements are not guarantees of future performance and those actual results or developments may differ materially from those projected in the forward-looking statements. For more information on Rockwell, Investors should review Rockwell’s annual Form 20-F filing with the United States Securities and Exchange Commission and Rockwell’s home jurisdiction filings that are available at