The box where you can store your favorite ring or jewelry

or you can use it as a box for a ring that you want to give to someone

if you want to use the Ring holder (hearth insert) 

Ring size: dependen on the ring (thickness): up to 18mm or USA/ Kanada: 8,0 (7-) 

There is a version with and without magnets, you dont need them, but they are nice to have:

if you want the magnets there is a pocket on the top, you have to pause the print then insert them and then the printer can hide the magnets under some layers of fillament.

with step file for customizing