VANCOUVER, BRITISH COLUMBIA--(May 6, 2008) - Rio Cristal Zinc Corporation ("RCZ") (the “Company”) (TSXV: RCZ) announces that it has entered into an agreement (the "Agreement") whereby Global Vista S.A. (“Global Vista”) will provide investor relations services to the Company. The Agreement is effective May 1, 2008, has a term of twelve months and is subject to the approval of the TSX Venture Exchange.

About Global Vista S.A.

Global Vista is a private consulting firm based in Lima, Peru that specializes in investor relations services for junior exploration and mining companies in the Canadian, U.S. and Peruvian markets.  Thomas Findley, president of Global Vista, is a past CFO of Southern Peru Copper Corp. (NYSE, BVL) and former CFO of Peru Copper Inc. (AMEX, TSX).  Mr. Findley is a director of the Company.

Services to be Provided

Pursuant to the Agreement, Global Vista will provide investor relations services to RCZ including but not limited to assisting the Company with its investor relations strategy; preparing and distributing investor materials; website design, construction and maintenance; investor telecommunications; and investor presentations.  Investor materials, a website and investor telecommunications provided by Global Vista to the Company will be in English and in Spanish.

Compensation

The Agreement provides that the Company, through its wholly owned Peruvian subsidiary, will pay Global a monthly fee of US$5,000 plus applicable taxes.  The total cost of the Agreement to RCZ during the twelve month term will be US$60,000 plus Peruvian sales tax of 19% plus approved expenses.

About Rio Cristal Zinc Corporation

Rio Cristal Zinc is a Canadian corporation focused on the discovery and future development of zinc deposits in Peru.  The principal asset of RCZ is the Charlotte Bongará claim block located in northern Peru within an emerging Mississippi Valley-type zinc district.   Additional information can be found on the Company’s website, www.riocristalzinc.com. 

For further information please contact Ross Knutson at:

Telephone:       (778) 588-6880

Toll Free:         (866) 609-9644

Fax:                (604) 609-9946

E-mail:             This e-mail address is being protected from spam bots, you need JavaScript enabled to view it

This news release includes certain "forward-looking statements" under applicable Canadian securities legislation. All statements other than statements of historical fact included in this release, including, without limitation, statements regarding potential exploration results, future plans and objectives of the Company are forward-looking statements that involve various risks and uncertainties. There can be no assurance that such statements will prove to be accurate and actual results and future results, events and objectives could differ materially from those anticipated in such statements.  Important factors that could cause actual results to differ materially from Rio Cristal’s expectations include exploration and other risks detailed from time to time in the filings made by the Company with securities regulators. 

THE TSX VENTURE EXCHANGE DOES NOT ACCEPT RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS NEWS RELEASE.