I do not know anything about this Ring. I do not see any markings on it. I do have a bunch of pictures of the inside of the bottom two sections. It almost looks like longhorns in there, but I don’t know if that means anything or if it was just something in the manufacturing process that happened. Pay no attention to the ring size I had to put that in. The hole is 3/4 of an inch but this is elastic so it will fit most any finger. I have no idea what the stone actually is. See pictures for condition details as they are part of the description. As is. All sales are final. Thanks for looking.