Vintage Silver and Green Agate Cocktail Ring

This one is from my moms jewel box. It’s a stunner, a real statement piece, and a well made piece of jewellery. I would say the size is 6 1/4, but I’ve included a phot of it on the size…maybe leans a bit to 6 1/2… Has a nice weight as well. Unfortunately this ring does not fit me!