iPhone X iPhone X Space Grey - discoloration

[Dark Shines]

I got an iPhone X Space Grey a few days ago and I was wondering if what you can see on the edge of the band is normal ?
I've tried to clean it with no results.

 

[Vermifuge]

Looks like a flaw. If you are under the 14 day return window get it replaced or return it.

 

[TechNismo]

For sure not normal.