They were just installed yesterday & I noticed it last night.

Is it the area with the "cracks"? If it is, it could be resin to fill fissures or cracks and usually done at the quarry. I have several in my Taj Mahal quartzite. They don't feel rough, but do have a different shine to them, so you notice in certain lights. They really weren't noticeable when I viewed the slabs at the stone yard.

It is, but the area is so flat & dull looking.

Someone did a poor attempt at making the cracked area flush. A nice diamond pad protocol and some MB20 on a hog's hair pad should get the finish to match.

The front edge profile of the sink is also crooked. Could that be fixed as well?

Yes. Drop the sink, cup wheel it straight, re-profile, polish, and restrap the sink.

Here are the seams. Couldn’t get as good a movement & color match as we wanted. What does everyone think about these?

Another picture of the seam with darker color on one side

Seams are very nicely done.

We have no more of this stone, so choice is to try to fix the sink issues the way Joseph Corlett recommended or replace perimeter with a quartz & leave quartzite island. So I would have two different countertops. Not sure what to do.

What I see in the pictures you provide seems like a replacement ….is the best solution

You might consider a contrasting stone on the perimeter counters…

In the pictures the flaws are too obvious to ignore

btydrvn, if they are able to repolish the rough area at the sink & fix the sink profile, what do you think?

The crooked sink cutout and flaws in the stone justify a re-do .. these problems do not seem fixable to me.. who pays for these mistakes has to be decided based on the circumstances…

It's just been stated that the crooked edge and dull spot can be fixed ... at which point it will be a perfectly good counter. Why replace a perfectly good counter? (Unless you just don't like it, of course.)

Who pays for the repairs? It is done by the installer at their expense, as it is part of the completion of the job. If they cannot do it, then the install is discounted by the cost to bring in someone who can.

If you replace those counters, that'll be on your dime ... no way is that included in anything; stone, fabrication, and install would not be included in current job. If they're feeling nice, you might get a discount from the current counters' install for not having to repair them, but that'll be noise compared to the replacement costs, if money matters.

If you're unhappy and can afford it, go ahead and replace the counters if it would make you happier. If you're only unhappy because of the rough spot and crooked edge ... get them to fix those first. If you're still unhappy afterwards, you can still replace them.

"If they cannot do it, then the install is discounted by the cost to bring in someone who can."

That's exactly what happened with the pictures I posted. Fabricator couldn't do it, customer didn't pay him, he wouldn't come back, I fixed 'em and collected his balance due.

I have been given a choice of fabricator getting a third party to try to fix or just replacing with a contrasting counter. I think they were reaching out to third party stone repair/restoration companies to take a look. I am considering a gray quartz as replacement but leaving the island Zermatt quartzite. No, this will not be on my dime. I already know this.

Good for you…You are so lucky to have those terms …the one challenge not mentioned..if they have to expand the hole to repair …will it become too big for the sink?…

What is slab smith? Is it some kind of app? You, actually, did not see the slab? That's a big no-no.

Over the years Joseph has been shown to be a rare talent at fixing things ..but in this case ….even if he was available…it would require you to accept compromises that you shouldn’t have to…

I did see the slab, but I didn’t check it for rough patches or problems with the finish. Nor does that have anything to do with the fact that they cut the sink crooked. That is the fabricator’s job to mark off places that they cannot use. Slab Smith is where you see exactly where the cuts will be and how it will be laid out. The only thing I would say about our Slab Smith is that on one of the seams, there is more of a color difference between the two pieces than it seemed like on slabsmith. It is way more dramatic in person than it was on the computer. That is not really the biggest beef in my situation though.

Sadly this is the way we learn how to avoid mistakes …but in these cases you rely on your pro’s to guide you… and it appears you chose a good one if they are willing to admit their mistake and fix this….. but we must all remember that seeing a picture of a slab is never a good way to be sure there are no un-fixable flaws… since they appear to be willing to do what is needed.. it is just an inconvenience and not a big loss… also sorry to hear this is not your only beef in this situation

The only tool that comes into play for you now is diplomacy🤷🏻‍♀️