Ask Our Experts | Advanced Search | Glossary | ASK OUR EXPERTS Dr. Fred and our other technical directors provide answers and solutions to your stone and tile questions. Browse the database or submit your own question. Browse Categories Select Category Care and Maintenance - Stain and Etch Removal Fabrication and Installation For Pros Only Health & Safety Concerns Selection Care and Maintenance (175) Questions and answers about cleaning, sealing, maintaining and restoring your stone, tile, grout, and polished concrete Fabrication and Installation (22) For Pros Only (7) Restoration contractors and fabricators ask their questions. Health & Safety Concerns (1) Selection (5) Questions and Answers on Selecting / Specifiying Stone Featured Q&A's Sanded or Un-sanded Grout on Dimensional Stone Floors Viewed 2847 times since Sat, Jun 12, 2010 Why White Marble Turns Yellow: Causes and Cures Viewed 19528 times since Mon, Feb 1, 2010 Efflorescence - Removal and Prevention Viewed 4458 times since Thu, Dec 25, 2008 Stone Myths Viewed 11025 times since Tue, Dec 23, 2008 Black Granite Fading - Doctored Stone Viewed 5261 times since Tue, Dec 23, 2008 Recently Added Q&A's natural stone care Added on Sun, Apr 14, 2013 at 8:58 AM in Care and Maintenance Resin on marble table top cracking and peeling Added on Sun, Apr 7, 2013 at 8:34 AM in Care and Maintenance Can multi-colored stone be changed to single gray color Added on Sun, Apr 7, 2013 at 8:30 AM in Care and Maintenance Marble Stair safety Added on Tue, Mar 26, 2013 at 7:19 AM in Care and Maintenance Crack in 2 week old quartzite island top Added on Tue, Mar 26, 2013 at 7:01 AM in Care and Maintenance Most Popular Q&A's Why White Marble Turns Yellow: Causes and Cures Viewed 19528 times since Mon, Feb 1, 2010 Stone Myths Viewed 11025 times since Tue, Dec 23, 2008 Cleaning Hard Water Stains on Granite Vanity Top Viewed 8474 times since Thu, Aug 21, 2008 Is it safe to use acetone to clean haze on my granite? Viewed 7407 times since Sun, May 20, 2007 Marble / Granite Cleaning - Is it safe to use steam cleaner on marble shower walls / floors and granite countertops Viewed 7128 times since Wed, Aug 18, 2010 Top Rated Q&A's Black Granite Fading - Doctored Stone Rating: 5/5 from 4 Votes. Why White Marble Turns Yellow: Causes and Cures Rating: 5/5 from 2 Votes. I have Ubatuba granite & it is filmy, looks dull & leaves water spots on it when I wipe it. How can I fix this? Rating: 5/5 from 2 Votes. Is there a product that will remove water rings from a polished marble surface? Rating: 3.1/5 from 7 Votes. marble needing acid washing for care Rating: 4.5/5 from 2 Votes.