Originally Posted by Kein
...It's because game randomly generates stats for every item...
Except for certain quest rewards and certain chests. In which case, the very first item that is listed will never be randomized. You'll always get the same item with set stats, no matter how many times you reload. We'll all get the same item for that matter.

I'd like to close by quoting Bellegar's famous last rhyme:

"Cursed be the mother that bred thee!
The wench must have been a hell-spawned banshee!"