Unique real double stones turn around ring real

This is a .950 imported from Peru sold silver ring. Another of my pieces I brought back from a trip. The stone you can turn to blue or other side for opal. Good quality rings. 950 silver that Peru is known for. I have more different stone types in my closet that turn like this one. ALL REASONABLE OFFERS ACCEPTED . One size only . Please see pictures can be adjusted to different fingers. Please keep in mind these are antiques and well made. Authentic please don't be fooled my fakes out there.