Guyana Goldfields now included in S&P/TSX Composite Index and S&P/TSX
SmallCap Index

TORONTO, Sept. 14 /CNW/ - Guyana Goldfields Inc. (TSX:GUY) ("Guyana" or the Company") is pleased to announce that it has been added to the S&P/TSX Composite Index and S&P/TSX SmallCap Index. Inclusion in the Composite Index will become effective at the open on Monday, September 20, 2010 and inclusion in the SmallCap Index will become effective after the close of trading on Friday, September 17, 2010.

"We are extremely pleased to be added to the S&P/TSX Indices", said Claude Lemasson, President and COO. "We have built a strong foundation for future growth and value creation for our shareholders over recent years and inclusion in the indices validates our progress. The S&P/TSX Composite Index is also a performance benchmark for many Canadian mutual and pension funds and will bring future liquidity and investment in the Company and increase shareholder value."

About S&P/TSX Composite Index

The S&P/TSX Composite is the headline index for the Canadian equity market. It is the broadest in the S&P/TSX family and is the basis for multiple sub-indices including but not limited to equity indices, Income Trust Indices, Capped Indices, GICS Indices and market cap based indices.

About S&P/TSX SmallCap Index

The S&P/TSX SmallCap Index provides an investable index for the Canadian small cap market. The index is float adjusted and market cap weighted and was developed with industry input as the ideal benchmark for those with small cap exposure of the Canadian equity market.

About Guyana Goldfields Inc.

Guyana Goldfields Inc. is a Canadian based mineral exploration company primarily focused on the exploration and development of gold deposits in Guyana, South America where the Company has operated since 1996. The Company is currently undertaking technical studies to advance and develop the Aurora Gold Project in Guyana, which is targeted to begin production in the second half of 2012.

As well, the Company continues an extensive exploration program at its Aranka properties where it recently made a new discovery at Sulphur Rose. Sampling, trenching, and drilling are on-going at various prospective targets. As at the date hereof, the Company has approximately $65 million in cash and short-term bank guaranteed investment certificates and no debt and 77,309,503 shares issued and outstanding.

Forward Looking Statements - Certain information set forth in this news release may contain forward-looking statements that involve substantial known and unknown risks and uncertainties. These forward-looking statements are subject to numerous risks and uncertainties, certain of which are beyond the control of Guyana, including, but not limited to the impact of general economic conditions, industry conditions, volatility of commodity prices, risks associated with the uncertainty of resource and reserve estimates, currency fluctuations, dependence upon regulatory approvals, the availability of future financing and exploration risk. Readers are cautioned that the assumptions used in the preparation of such information, although considered reasonable at the time of preparation, may prove to be imprecise and, as such, undue reliance should not be placed on forward-looking statements.

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For further information: Guyana Goldfields Inc., Claude Lemasson, President & COO, Jacqueline Wagenaar, Director of Investor Relations, Tel: [phone] Ext. 2295, Fax: [phone], E-mail: [email protected], Website: www.guygold.com