Ave!
As the ring was source from Dubai (Middle East),
Byzantine makes more sense.
It could also be
Ottoman, but with the grapes and vines motif, less likely...but you never know.
Definitely not Etruscan. See the image below.
Not sure if any of you know this, but one of the real mysteries of Etruscan ring construction is not just how such infinitesimally tiny
gold balls were made in the first place, but how they were actually adhered to the ring itself. Etruscan magic?