The black stuff that u referring to its called mica and its a one of minerals you will find in lots of granite. Mica is very flaky and crumbles. people will call and say that while cleaning they counter they notice black specs on white paper towels, because that stuff washes off and comes out off the stone. Its also very soft and almost impossible to polish. That's the reason most of the time that u have pitting in granite and depending on how big the mica minerals are you may have little pits or gouges. The only way to fix it is to fill it with clear epoxy or ca glue. But the customer needs to know that its the beauty of nature nothing else.--On Thu, Nov 3, 2016 at 12:22 PM, Baird Standish <bairdstandish@gmail.com> wrote:Hi everyone. I came across a strange situation on a granite counter yesterday where a number of teh black stones in the granite have become rough. I tested with my fingernail and i could chip away flakes of the stuff. It feels like schist within the granite. They said that this happened over time and they only treat the counter with granite cleaner. I would be interested to know why this is happening and if there is something that could be done about it. I would think that diamonds would just break up the stones if I can scratch it with my fingernail. I attached a picture. Thanks.BairdVisit list archives, subscribe, unsubscribe or change your subscription preferences: http://stoneandtilepros.simplelists.com/sccpartners Start a new conversation (thread): sccpartners@stoneandtilepros.simplelists.com
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