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GREEN STAINS ON GRANITE

Q.After installing a solid slab of granite countertop it was covered by brown paper to protect it during the rest of the renovation. When the paper was removed two months later there was a green stain about 3" in diameter. Another smaller green spot appeared on the other side. The granite installer tried acetone, toulene, and lacquer thinner to remove it without success. Now they have applied poultices to the green areas. What is causing the green stains?
Hello-We will need some more info to answer your question.What type of granite do you have.What type of poultice are they using?How long has it been on and was the attempt sucessful.Please e-mail me directly at mail@stoneshine.com.
Stu Rosen
 
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