You didn't specify what you mean by abrasions or where you're located - My family in Denver has used www.restoremarbleandgranite.com/ for their floors etc..
I would contact CONPROCO http://www.conproco.com/ and find out if they have professionals in your area who can help. It sounds as thought your counter-tops need to be resurfaced - maybe they'll know some who can do it.
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