Initial Resource Estimates at La Colorada Contain 605,000 Gold Ozs.in Measured + Indicated category plus an additional 582,000 Ozs. Inferred

Vancouver, BC, December 18, 2009 – Pediment Gold Corp. (TSX:PEZ; OTCBB:PEZGF; Frankfurt:P5E) (“Pediment” or “the Company”) is pleased to outline its initial, bulk tonnage resource estimate for the La Colorada gold-silver mine project. The resource estimate has been generated for the Company by Mr. Gary Giroux and is presented in a NI 43-101 compliant technical report entitled “Geological Report on the La Colorada Property with a Resource Estimate on La Colorada and El Creston Mineralized Zones, Sonora, Mexico”, dated November 30, 2009 prepared for the Company by independent consultants R.H. McMillan Ph.D., P.Geo., J.M. Dawson M.Sc., P. Eng. and Gary H. Giroux, M.A.Sc., P. Eng. (the “La Colorada Report”) This initial estimate does not include the recently-drilled Mina Verde nor La Veta Madre targets, broken rock possible resources (waste and leach piles), or recent results of drill testing by the Company that were unavailable at the time of compilation for the estimation. This estimate is for bulk tonnage resources only and does not address deeper vein-type resource potential.

Mineral resources that are not mineral reserves do not have demonstrated economic viability. Mineral resource estimates do not account for mineability, selectivity, mining loss and dilution. These mineral resource estimates include inferred mineral resources that are normally considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as mineral reserves. There is also no certainty that these inferred mineral resources will be converted to the measured and indicated categories through further drilling, or into mineral reserves, once economic considerations are applied.

Resource estimates were made for the El Creston and La Colorada-Gran Central deposits by G. H. Giroux of Giroux Consultants Ltd. In both cases geologic solids were created by Pediment geologists to constrain the estimation process. Drill holes were compared to the solids and assays were tagged if inside or outside the solid. Gold and Silver grade distributions for both mineralized and waste assays were examined and capping levels picked to handle outliers. Composites 5 m in length were created to honour the solid boundaries and used to model the grade continuity using variography. Blocks 5 x 5 x 5 m in dimension were estimated by ordinary kriging in a series of passes with expanding search ellipses. Bulk density in each deposit was established from measured specific gravities. Estimated blocks were classified using grade continuity. The results for a 0.3 g/t Au cutoff, a reasonable cutoff for open pit extraction, are tabulated and can be seen at the Company website at Pediment Gold Corp.