Vibrant Fire Crystal Opal Ring in Sterling Silver Size 8.75

Modern style sterling silver ring that is set with a fire crystal opal. (may be Mexican)  This stone is a cabochon, but does not have a round dome, it is kind of pyramid shaped. This stone has vibrant play of color with all of the colors of the rainbow. Lots of red flash. The stone measures a diameter of 8mm. The setting is well done as it serves as a bumper rail that protects the stone. Here is is in the sun: