Pretty bad . And looks like the wrong silicone too.

I would not be happy with that seam at all!!! I think there is to much space in between and that silicone will get discolored over time and look worse! I have Quartz and you can hardly see seam unless you are really looking for it!

mokey2424:

The difficulty of seams depends on color, particulates, movement, and fit. The mottled whites, like yours, are some of the most difficult. Beth H's picture is not only a "good one" it belongs in the category of "They don't get any better than this." Had I made it, the homeowner would be hearing those words from me.

Your seam has a raw chipped saw cut on the right side, contributing to the mismatched adhesive problem. At this stage, the top could be pulled and a Seam Phantom run on that edge to eliminate them. This could be done on site.

Place a straightedge over the seam, please. It should not rock or have any dips.

Here's a recent do-over. They were very pleased.

we have quartz in our new kitchen without a visible seam. I would demand the slab be replaced and I would not pay for it until completed to your satisfaction.

"We have quartz in our new kitchen without a visible seam."

Then you have no seams. Anytime you sever a particulate, you're making a visible line, no matter the fit or adhesive.

The standard is "inconspicuous" not "invisible" for good reason.