What do you mean by "uneven"? What do they mean by "skimming the seam"?

The sheets appear to be from the same batch; the color matches are excellent. It's the movement that's off. Aside from "shopping" slabs to get movement match, which can waste material and cost consumers more money, there isn't anything that can be done.

By uneven I mean one slab is higher than the other.

I honestly don't know what they meant by skimming the seam but assumed that they meant taking some off of the high end to make them level.

I wouldn't be pleased either. That seam needs to be repaired.

The cut is chippy and it shouldn't be on a fine-grained quartz. The seam is also too wide, which is easily remedied with a seam setter to pull the slabs together electronically. The epoxy is too white. If the seam is polished, it will abrade that area and leave it duller, which can be quite visible if there's any backlighting from a window or light fixture. One slab should not be higher than the other!

Seam setter:

Resulting seam:

Shannah:

Did they use the pictured Gorilla Grips? Those things can pull the bow out of a top with the cams, the vacuum is so strong. After the seam is pulled together, an installer slides a razor blade through the glue squeeze-out. If it strikes a high side, a cam is placed under the steel bar and the top is pushed until the razor blade slides between the sides without catching.

The sides of mayflowers exceptional seam were each dressed with a CNC machine or at least a Seam Phantom; no saw makes cuts like that.

I'm not aware of any estone manufacturer that allows top polishing seams. None. Even if they get a consistent finish, your warranty is gone.

Joseph, they did use a CNC machine.

It isn't fair to compare mayflower's seam to yours. She has a very fine particulate, consistent color, and no movement. You have inconsistent color and lots of movement. The varying height is unforgivable with today's tools, but your seam is never going to disappear.

Aren't the marble-look quartzes a fine particulate? I think so.

Color and pattern-matching the slabs is a different issue than the quality of the seam.

"The company that installed is admitting the seam is bad but claims nothing can be done to fix it."

What is their reasoning behind this? What are they blaming the "bad seam" on if not their installation?

"Color and pattern-matching the slabs is a different issue than the quality of the seam."

That's true, but they are part of the larger picture of overall appearance.

Update:

the company came out today to repair the seam. It looks exactly the same as before. They are blaming it on our cabinets not being level, which is was not the case. The installer said they do not use gorilla grips, only repaired seam by hand. I mentioned the epoxy being too light, however, seam looks exactly as it did before. I don't really know what my options are at this point.

Is the seam still uneven?

I always have to fine-tune cabinets before I install tops. I have to fine tune the cabinets that I set. Of course the cabinets were out; everyone's are.

Why did they go ahead and install the granite if the cabinets are out of level?

They cannot polish the seams because they can't modify the surface without voiding the warranty. Like Joseph Corlett said, it will void the warranty.