Is this one of the very porous of the quartzites? Those show adhesive bleed at the seams, which shows darker. And it may or may not dry out and lighten up. Because if you look very closely, the actual adhesive doesn’t look as dark as the stone surrounding it.

I don’t really know if it is very porous. It is zermatt quartzite. I just don’t think the seams look that great.

They look a bit wide and like the adhesive is too dark.

On the full seam, is that a chip near the edge?

What is the black dot(s) near the edge of the sink seam?

They put the little machine on the full seam to make it tight, but I still thought it was wide.
The other one at the sink was just pushed together by hand. I think they are a little wide as well. Yes, there must be a chip at the edge of that full same. I feel like they need to repair the chip and then do the seam. The black places were unexpected because we looked at this on slab Smith, but you cannot see the side of the stone. That is just part of the natural stone. There are some other black Crystal spots in the slabs in general. We Did the seam at the sink because we were working with two slabs and had to get everything out of that. I went in and looked at it on the computer and it looked great. I was surprised about the two little black crystal things, but there was just no way to see those on the computer. They are not some kind of weird filler. I don’t want to mess with them and try to chip them out because I feel like that will cause more problems. Bad luck that they just happened to be where we were matching up seams!

They apparently used clear adhesive which shows up as the medium gray that we're seeing. Verbo is correct, the porosity of the material needs to be tested as there are non-bleeding adhesives that could be tinted to match more closely.

They tinted the adhesive to a gray because the color they had used before was too light/white. It is some yellow stuff that they add color to.

I put a couple areas of water on the surface to see how absorbent the stone is. The water stayed on the surface & didn’t soak in. Not sure how you test for porosity or what kind of adhesive to ask them for.

lana:

Here you go.

"Yellow stuff". Ugh. Probably polyester. Cheap and not very water resistant. You want methacrylate with dispensed catalyst. These guys get in a hurry, use too much cat, and if the adhesive doesn't shrink below flush as it cures after it's scraped, it'll yellow. Or both.

Here are the results after repair of the seams.

They are better.

I keep thinking that vein near the corner is a large jagged crack in the counter!

The seams look much better.