As part of a 3D-printing course I created this sigil ring. It is based on the House Stark sigil of the HBO series Game of Thrones (based on the books of George RR Martin).

I printed 'SigilRing_LargeRingSmallSigil' on the Form2 and it came out rather nice. (unfortunately it does not show on the pictures, bad camera/lighting FTW!)

I also included two other versions, both with a larger sigil (so they should print even better) and one with a smaller diameter.