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How to test sealed quartzite ?

Mr & Mrs Perfectionistos
2 months ago
last modified: 2 months ago

So there are discussions (and nightmares...) all over this site about "fake quartzite" with methods to test if it is real.

But how do I test if the slabs are already sealed? How can I know if the aren't etching because they're real quartzite or merely because they're properly sealed?

Our slabs were installed several weeks ago, we've left many different fluids overnight and they came off with a wipe, however next to the sinks and some other spots it will turn grey when wet for a few minutes, it will take a while for it to dry out and get back to the regular color. the fabricator and installer say there's no issue it just needs a reseal

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