It's beautiful. Is it noticeable when standing back or just on close inspection? If only when close, I would live with it and know that it will soon fade into the background for you as you enjoy the overall beauty of it.

Thank you! We are leaning toward acceptance and moving on. It is pretty noticeable behind the sink faucet and a few other places though.

The problem is in the oven photo but only noticable when standing right in front of the oven. Here’s a shot of the problem as it appears just behind the sink faucet.. the tiles are 4” across.

is that grout at the countertop?

It seems to me what you are seeing is the tile as it meets the glue. If you look at the other tile that has not been cut you see the same reflection/pattern. Could be that once the tile was cut it created jagged edges and that's what you see. Look at the last pic you posted on the comments. The tile that has not been cut, you can see half moon reflections that I believe are form the back cut from the factory. The bottom tile that was cut you can see the same but almost in a 90degree angle.

Here’s another. Probably not severe enough to redo. And yes, they also grouted the bottom of the tile right at the countertop

Those are the natural quirks or imperfection that happen when using glass tiles. I used glass in several bathroom and had a good tile guy, but he missed a few spots when doing large areas. Sometimes they looked good when just installed, but as the thinset dried you got a few bubbles or voids that became visible. I don't notice them any more.

"And yes, they also grouted the bottom of the tile right at the countertop:"

That grout needs to be removed and replaced with 100% silicone caulk. All changes in plane get caulk.

Or, just run a very thin bead of caulk along the bottom edge. Maybe that will be enough to not see that edge so much. I think it looks great. It just the nature of the tile somewhat. I've heard that is common with glass tiles. The more translucent the more the issues such as yours. I would not have it redone. Stop obsessing. I understand, I do that too even though others don't notice the flaws I still know they are there. It (you) will get better and won't notice so much after a while.

Thank you all for your feedback. Yes, we are going to stop obsessing as Izzy Mn says and enjoy the new kitchen! I do think that the tile store should offer a bit more guidance on the complexity of the install for tile. The examples they have on the wall are not the same as the finished product.

Question: what color is that tile? It is really pretty.