Bizarre, Beautiful Blue Stone Ring

What to say about this ring?! It is beautiful. It is bizarre. The ring has two vibrant blue stones atop a much larger, globe-like deep blue gem stone. The settings could be quite old, and there is a stamp, but I cannot read it. Likely sterling silver. If you know any other details about this special vintage ring, please do let me know! It leaves me confused and amused. And I hope you love it.