I'm guessing this ring is from Asia. Here is another picture
That was my guess too. Besides yurman the twisted cabling is very representative of Charriol although it seems like a lot of folks are getting in that market. Looks like a nice, substantial pieceBased on the logo that is Charriol. It is a Swiss jewelry manufacturer and it is popular in my country. I am Asian.
https://www.charriol.com/en/