Printable STL and source 3DM file (ready for modifying or production). Ring was succesfully tested in production. Client still satisfied and thankful.
OBJ format added just for fun after CGtrader's recomendation about good publishing. Untested. But exported in two versions: as mesh and as NURBS.
Ring Size: 17.3mm .
Gems: 37x1.75mm round cut.