Saw the DC Lantern rings collection for sale in a comic store and felt insulted at how poor the quality was for these items. so I decided to try my hand at various designs based on different art styles seen in the comic books.
You can use the file labeled 'Ring Internal Diameter' to see how much you need to scale the ring up or down to suit your finger. Trace your hand and measure across the finger you wish it to fit on to roughly find your ring size then scale the guide to match before applying it to the ring of your choosing.
Printed on an Anycubic Mono X, at a 45 degree angle. Sliced using Prusa Software