Bezels are anchored by the 8 sided paper clip so don't try to pry the bezel off. The insert is glued in.
To get the insert out, you can either:
Try to pry it out with a razor blade using the masked off crystal as a fulcrum. If done carefully, the insert can be removed without damage.
Drill or cut into the insert with a dremel blade and dig it out.
Remove the movement, pop the crystal out and pry the insert out from underneath.
I always use 3M tape rings to re-adhere. It may take two, they are very thin. Assess height needs before final press.
Insert diameter is not gen-spec, be careful what you buy. Crystal OD is 30.5, anything less won't fit over the crystal. Many vendors sell 1675 inserts for plexi with ID of 30.2 or so, and advertise they fit on 16710. They don't.
Gen 30.6 / 37.65
BP 30.6 / 36.5
WSO inserts are gen-spec and won't fit without shaving
Vostoks fit, some don't have great numbers. Their all black one is good enough. Sometimes what you get varies a little from what you see.
https://www.ebay.com/itm/Aluminium-i....c100892.m5207
This is a Vostok black