OEM Holster Causing Scratches?

Is it possible that the OEM holster causes screen scratches? And scratches on the silver part of the Curve by the camera? My screen has a ton of these little "micro - scratches" on it. They look like specks of dust, but they're circular scratches. Do you think sand in the holster causes it?

And while I opened a thread, I may as well rant. I am quite fed up with this phone, I have changed the LCD lens enough times, and every time something goes wrong. Either dust gets under it, or there are weird smudges, or scratches on the inside. I just want a brand new phone, a fresh start.

If you open the case and change lenses or cases, you must get used to dust...