It's a combination of the domed shape, as well as the rather thick sapphire. Pam crystals are much thicker than you are probably use to.
One thing I have noticed odd about the crystal on my most recent purchase, is that when viewed from the side, the dial drops away. Exactly the opposite of what my other pams do.
This is on a 571, however, when I view the crystal on my 24 gen, it looks as though the crystal is optically raised rather than sunken. Odd!
The sunken visual is similar to how a dial looks when a watch is turned away from you when it is under water.
I have no idea why this is the case.
Anyone have any thoughts on this?
Knife