worth?

I have a 12 set of the chalices and I have no idea what is the material its made and the year and origin of it. I’d appreciate if someone told me

Or what...?... I usually buy jewelry just for myself, concentrating on vintage costume pieces from Trifari, Monet and Napier, just because I like them. This summer I got a nice goldtone Trifari bangle for a buck. This week at a thrift store, I spotted this ring. It seemed heavy for its size...