Quote:
Originally Posted by crs12
I cant get a straight answer out of any shops so far I have had
Plexi is stronger than Sapphire but will scratch more easily
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Make that "...much, much more easily."
Acrylic crystals collect scratches instantly. They are easy to polish for the same reason they are so easy to scratch.
In normal use, sapphire won't scratch at all, which is why everyone uses it now.
I have a 24 year-old Datejust with the original sapphire crystal (the very first of the Datejusts to have it) and it has zero scratches despite heavy use. Even in blinding noontime sun, there are no visible scratches whatsoever.
Contrast that with the brand-new acrylic crystal on a delicately-worn vintage Patek - several visible scuffs after less than a week of wearing.
The difference in scratch-resistance is night and day.