Thanks for the extensive reply!
Indeed the GS and Sternkreuz crystals are usually a perfect fit, as well as ST and Clarks.
Unfortunately, all of the Tropic 12/5500 crystals from abovementioned manufactures have the beveled edge.
I've checked the ST RC 12, and it has the sharp edge and high wall as well.
It seems that the manufacturers all focus on the shape of the later replacement crystals, which indeed have the sharp/beveled edge.
I will try to find the blue frame labled 'watch parts' one which you mentioned, and hope this will be a good fit.
In the mean time, maybe someone could confirm the shape of the PA 459-46 as I haven't seen it in real life or pictured without the packaging.