This is a very simple print that shows nice clarity when printed with clear PETG. The Galaxy Silver Prusament PLA gives a metallic feel to the ring.

Since the vase print method is used, only one ring can be printed at a time.  

I have included individual prints for PLA and PETG for ring sizes 5 to 13 in 0.5 ring size steps. The ring sizes grow uniformly to meet the required inner diameter, so the thickness and depth change as well.

Another version of this ring called "Spiral Ring -solid"  which has a circular inside is included in my ring collection.