Hi, I have an Omega Geneve with a crystal that has a small barely visible crack at the edge. My local watchmaker once looked at it on the surface and said that I needn't worry about it.
Now, I'm about to ship it to a different watchmaker for an overhaul and am thinking of noting that I know of the cracked crystal, but would rather keep the original. The question is: should I be worried about moisture and accept a non-original crystal, should the watchmaker raise the issue?
I've included a photo below. It's only visible if you look at it from the side near 7 o'clock, and when I rub my finger along the edge, i don't feel the crack.
And on a larger level, of curiosity: When is a crystal crack significant enough to warrant concern? How can you tell?