Rockwell Appoints Experienced Mine And Earth Moving Manager To Oversee Its Northern Cape Alluvial Mining Operations

September 4, 2008 – Vancouver, B.C. – Rockwell Diamonds Inc (“Rockwell” or the “Company”) (TSX: RDI; JSE: RDI; OTCBB: RDIAF) announces the appointment of Bruce Cubitt, a specialist in earth moving plant and open cast mining methods, to strengthen the Company’s management team and oversee all day to day operational aspects of its Northern Cape alluvial diamond mining operations.

Bruce initially studied geology at the University of Natal and joined De Beers as a field assistant prior to completing a National Technical Diploma in Coal Mining at the Witwatersrand Technikon in 1985. He received his Mine Managers Certificate of Competency in 1992, and completed a Management Development Program at Pretoria Technikon in 1993. He gained extensive experience in underground, and then open cast coal mines, rising to mine manager level on BHP Billiton collieries in the Mpumalanga Province of South Africa. Bruce joined MCC Group of Companies, a successful contract mining business, in 2000 where he gained experience on open cast platinum and alluvial diamond mines. He has a Blasting Ticket and spent time in Australia gaining experience in shovel and truck procedures for open cast mining.

Mr Cubitt will assume the role of Operations Manager for the Company’s operations in the Northern Cape Province. He will be responsible for the day to day management, optimization, maintenance, and replacement policies of the Company’s large earth moving fleet, processing activities, and related services. This new appointment bolsters the Company’s Senior Management team which now comprises the following key functions and personnel: Bruce Cubitt, Operations Manager; mining, processing, and services; Hennie van Wyk, Manager New Projects, including responsibility for all new Processing and Final Recovery Plant installations and upgrades; Dominique de la Roche, Chief Financial Officer, all financial, costing, capital, and legal activities; and Jeffery Brenner, Manager Diamond Marketing and Sales.

In addition to strengthening the management team Mr Cubitt’s appointment will allow Hennie van Wyk to focus attention on the Company’s demanding New Project pipeline. Currently, Rockwell is fabricating and constructing a new high volume Wet Rotary Pan-plant at its Saxendrift operation, which is a key part of the Company’s expansion program. Good progress is being made on the new plant, which is on-time and on-budget. The Company has also scheduled the commissioning of a second Rotary Pan-plant on Wouterspan (Wouterspan-B), to be followed by the modernization of the existing Wouterspan plant (Wouterspan-A), and is in the final stages of planning additions and modifications to the Niewejaarskraal processing plant, located to the southwest of Saxendrift. The Wouterspan-B plant will utilize plant and equipment previously installed at Makoenskloof. The Company will be optimizing its final-recovery and “hands off” diamond recovery procedures in the Middle Orange River to ensure improved security, cost savings and efficiencies.

President and CEO John Bristow noted “During the time he has been with the Company, Bruce Cubitt’s experience in open cast mining methods has already had positive impact on cost savings and better utilization and optimization of our earth moving fleet. His appointment has also been particularly beneficial in respect of allowing Hennie van Wyk to focus attention, with his Projects Team, on the installation and commissioning of new metallurgical processing and recovery plants, thereby ensuring that we can maintain our growth profile and increase diamond production while reducing operating costs. Hennie also continues to impart his knowledge on operational aspects ensuring on-going quality control of the existing processing plants.

Rockwell has progressively enhanced and modified the various operational practises of the large private family business that it acquired in late 2006. This latest addition to the management team is part of that progression, added to which on-going cost challenges that have come to the fore in 2008 (fuel and cost of living increases being two notable factors), have also necessitated proactive cost reduction measures by the Company. Likewise, these changes reflect management’s recognition of the expansion opportunities in the existing operations, and focus on the demanding new project pipeline the Company is pursuing.”

For further details on Rockwell Diamonds Inc., 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

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

Forward Looking Statements

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 each Company expects are forward-looking statements. Although the Company 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. There is no certainty of the financing completing. 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, geopolitical uncertainty and political and economic instability, and general economic, and market or business conditions. Investors are cautioned that any such statements are not guarantees of future performance and that 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 www.sec.com and the Company’s home jurisdiction filings that are available at www.sedar.com.