Rockwood Press Release

Rockwood Holdings, Inc. Chairman & CEO, Seifi Ghasemi,
Rings The Opening Bell™ at the NYSE

New York, NY USA (November 22, 2005) - Rockwood Holdings, Inc. Chairman and CEO, Seifi Ghasemi (center), celebrated the company’s recent initial public offering by ringing The Opening Bell™ at the New York Stock Exchange (NYSE) on November 22, 2005.

Joining him on the podium were (from left to right) Rockwood Board Members Brian F. Carroll and Douglas L. Maine, NYSE CEO John A. Thain, Rockwood Board Member Susan Schnabel, Ellen Ghasemi, Rockwood board members Todd A. Fisher and Fredrik Sjödin, Senior Vice President of Law and Administration Thomas J. Riordan and Rockwood Senior Vice President and CFO Robert J. Zatta.

Rockwood Holdings, Inc. (NYSE: ROC) began trading on the NYSE on August 17, 2005.

Rockwood Holdings, Inc. is the ultimate parent company of Rockwood Specialties Group, Inc., a leading global specialty chemicals and advanced materials company. Rockwood has a worldwide employee base of approximately 10,200 people and net revenue of approximately $2.9 billion in 2004 on a pro forma basis. The company focuses on global niche segments of the specialty chemicals and advanced materials markets, including specialty chemicals, performance additives, titanium dioxide pigments, advanced ceramics, custom synthesis, specialty compounds and electronics. For more information on Rockwood, please visit www.rocksp.com.