Your countertops are beautiful. It is difficult to tell on a monitor but it looks similar to the quartzite in this thread which was eventually replaced. I would call your fabricator immediately and report the issues that you are having before attempting a poultice or any other remedy.

https://www.houzz.com/discussions/5582040/quartzite-nightmare#n=91

Bernzomatic.

Thank you; we called them earlier and because of the whole "non-essential business" shutdown, they're completely unsure if they're allowed to be working right now. They're on standby waiting for clarification. But the wife (who typically deals with customers) did say she would speak to her husband to see if he had any ideas. Hopefully they can come out soon and take a look..

Thanks for that thread, too. I noted someone there suggested super-non-porous stones like hard quartzite can require up to 7-8 coats. My goodness.. that's probably where our issue lies, then. They applied two.

@Joseph Corlett, LLC would that be a fix? This isn't intended to come off as rude, but what is that supposed to do for the stain? I'm very "newbie" when it comes to this kind of stuff. Thank you!

Hmm, if your quartzite was super-non-porous you would not need any sealers.

Some of the quartzites aren't true 100% quartzites, some are part marble, so they are very hard, but still porous.

I have Taj Mahal quartzite and it doesn't need any sealers.

Do you have any pieces of your stone? Have you read all the Geology threads written by karin_mt? She lists out many tests you can do to verify the properties of your particular stone.

The only other piece we have is a threshold we had cut that we intend to eventually use in our guest bath. I guess technically we could use the corner as we could probably cover that up. But yeah, you're probably right in that it's more porous than I thought it was.

We've also got some stains where I assume we put down something with an oily bottom and didn't realize it, so the oil seeped in. Also given that we had the water issue that evaporated, yeah, it must be more porous than I expected.

karin_mt had an absorption test, very simple one. Just fill a container with water dip a corner of your piece of stone and let it sit. If it is porous you will see the water wick up like a sponge and travel through the stone.

I left my Taj Mahal sample dipped in the water for hours and there was no capillary action observed, so very non-porous. I had also made sure I dipped the edge that was rough cut and not a polished section.

One of karin_mt's threads shows several stone samples and how they reacted differently after X minutes dipped in the water.

"@Joseph Corlett, LLC would that be a fix?"

Yes. If you wave a very hot flame over the rings, they may disappear. I've done it.

The candle heat had nothing to do with this.

Thanks Joe.

Thanks @chispa!

Here are the instructions for the porosity test (among others)

https://usenaturalstone.org/how-to-be-your-own-stone-sleuth/

@David Fuller What is the name of your quartzite?

@Marguerite Mastromatto I believe it's called Allure. It's listed as a granite some places, quartzite elsewhere. We bought from IGM in Windsor, CT. It looks like the stone is sourced from Brazil.

https://www.cosmosgranite.com/windsor/quartzite/windsor-1401-allure-quartzite-3cm

Clearly the actual slab we bought is significantly lighter than this picture. I think the slab has a ton of variation to it and we bought from a very light lot.

@David Fuller I have been to the IGM in Quakertown, PA, as well as several other stone centers. It seems that most of the quartzite is sourced from Brazil. I am trying to narrow down choices, but I just keep reading so many issues. Were you able to resolve the issues?

@David Fuller do you have a picture you can share that shows more of your counter? I love Vancouver quartzite but looks similar to yours and a few others I’ve seen on threads that ends up being problematic.

This is what we would like to get

Hi David Fuller. Were you able to get the glass ring marks off your counter? If so, how did you do it? Have you had any more issues with the quartile? Were you able to reseal it?

Sorry for late response to both of you. I don't have any other pictures at the moment, sorry. @AmyK we used a hair dryer to get one ring mostly off and one about half gone. Haven't tried ever since; the pandemic and everything has side-tracked us. We haven't been able to reseal it either, although because we know what stains it, we've figured out how to mostly avoid more issues. We typically just put down a towel in the most-used area and just ensure we wipe everything up (water, juice, etc.) before it penetrates the stone.

Thanks! Good luck with it!

David, have you resolved your graying on your counter top? I have Mont Blanc Quartzite and it is rapidly showing the dark stains around the sink and stove and on every edge that was fabricated. The fabricator points at the supplier and the supplier points out the fabricator did not seal it properly. Even cut areas under the microwave with out a seam have a gray edge.

Around our stove top

Edges on island where we eat

This is an area of minimal water use.

Can anyone help me?

Our quartzite is only 2 years old. I imagine it will only get worse.