We had kitchen Counter (http://GialloFiorito.com) tops installed two weeks ago (Giallo Ornamental). In one of the two Slabs (http://www.VerdeUbatuba.com) that were installed there are light blue stains? appearing. They vary in size from from 12" to 2" square. They are confined only to one of the two Slabs (http://www.VerdeUbatuba.com) ...we have not used any chemical cleaners or sealers since the installer sealed the Slabs (http://www.VerdeUbatuba.com) ...I am at aloss as to what is occuring or how to fix it...any ideas?
