Contractor / Fabricator called me. Has a customer with Calcutta Gold that has stained.It is in a bathroom. Supposedly she has only put her straightening iron on this area. Seeing all the circles I think it might be a chemical reaction. Any ideas?Thanks Tony--Tony WarneyExcel Stone and Tile Care760-788-9400Visit list archives, subscribe, unsubscribe or change your subscription preferences: http://stoneandtilepros.simplelists.com/sccpartners Start a new conversation (thread): sccpartners@stoneandtilepros.simplelists.com