What is this called?

[mginthecity]

...when the band of an engagement ring splits at the top (not from the top view, but from the side view)? I see it a lot on halo settings. I assume you can't say "split shank" because that seems to only mean when it's split from the top view, but maybe it applies to this, too.
Here's an example: http://ecx.images-amazon.com/images/I/418kTFvUDaL.jpg

 

[LibbyLA]

Cathedral.

 

[mginthecity]

YES thank you!