Pietra Cardosa counter damaged from chemical cleaning solution. Help!
Estimated Reading Time: 1 MinutesQ. I have a Pietra Cardosa countertop, and one handprint-sized area has turned almost white on the black countertop because of the spilling of a descaling chemical solution that I was using to clean an appliance. If you have any suggestions for how I would go about getting this back to black or as close to the rest of the countertop as possible, that would be greatly appreciated!
A. Most likely, what you are dealing with is etch damage. The surface of the stone has been chemically altered. It can be fixed, but unfortunately, there is no easy DIY fix for this problem. You will need to have it professionally honed and polished.