Sterling Silver Amethyst Cabachon Ring

This is a beautiful ring with what I believe is an genuine natural amethyst stone. It has lots of nice detail and looks almost like a southwest style. The ring is marked 925 and it also has either a GJ or a CJ makers mark on it. The mark is slightly offset and I can't see part of the lettering because of that. The ring is a size 5.5 and the total weight is 11.4g. It is in very good used condition with a small amount of tarnish, scratches, and dings from normal wear. The stone has some scratches on it as well and there is what appears to be maybe a small crack on the inside of the stone. There is no sign of a crack on the outside but I can see it with magnification so I thought I'd mention it. (Bin#MSP2)