Can someone please tell me what type setting this is?

[todayiswednesday]

Here it is. I like the detail and how the setting goes up over the stone. I like everything about this ring. If I wanted a similar ring with a round diamond center stone, where would I look? Would it have to be custom made?
TIA

 

[pyramid]

Looks a bit like a coronet setting although it is hexagonal and not round.

 

[baby monster]

If you wanted an exact replica, it would probably have to be custom. You can browse this vendor for antique or replica vintage settings.
http://antiqueengagementrings.com/shopping/

 

[yennyfire]

If you wanted an exact replica, it would probably have to be custom. You can browse this vendor for antique or replica vintage settings.
http://antiqueengagementrings.com/shopping/

Agreed. You could also check out ERD and 23rd Street...they could both do this for you.

 

[proto]

http://www.christies.com/lotfinder/jewelry/a-belle-epoque-amethyst-and-diamond-ring-5269399-details.aspx