Amethyst spinner ring

A really cool dark purple (but also bright) 4mm Amethyst which is spinning around an 8.5mm wide silver ring along with a 1.5mm beaded spinner and a plain 1.5mm silver.
I think these three rings together are beautifully simple but really effective together. All .925 sterling silver

Made to measure so please let me know a ring size.
The stone can be changed for another if your like however prices may vary.