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Mont Blanc Quartzite with Gray Stains appearing

2 months ago
last modified: 2 months ago

After two years of having Mont Blanc Quartzite installed from a supplier in Brisbane, CA, and fabricated by a fabricator in Cotati, CA, we’ve started noticing gray discoloration around our sink, stove, and along the edges of the countertops. The staining seems to be getting progressively worse.

Unfortunately, the supplier is blaming the fabricator, while the fabricator insists the supplier should take responsibility. This back-and-forth has been going on for several months now, and in the meantime, the countertop continues to darken.

Our fabricator is working on finding a solution to remove the stains and reseal the quartzite, but the supplier has not offered any assistance so far.

Has anyone else experienced something similar? If so, do you have any suggestions on how to remove the stains or advice on how to proceed? I’d greatly appreciate any help.



Graying at stove top


edges of counter tops


Gray with finger splaying on sitting edge of island (not near water)





Stone on walls and counters

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