Sterling silver choker necklace & moonstone

This is a vintage Native American sterling silver choker collar necklace with a brilliant large teardrop Moonstone pendant. The choker collar is 15.5” around with a 1.5” gap. The Pendant is approximately 2” by 1 & 1/8”. It is stamped jj and 925. The necklace and pendant is 39.5 Gr. As there was no markings on the choker I had the silver content tested see above photo. Also you can change pendants as you can screw off one of the piece tops.