3DM source (with sprues and without sprues) and STL files completely prepared to printing. OBJ versions as meshes and as NURBS were added just after silly CGtrader recomendations about model placement.
Set of 22 rings contents: 11 bimetal rings (2 parts) and 11 single metal rings (1 part)
Diameters: 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5, 20, 20.5, 21
Width: 5mm.
Gems: 2.5mm diamond cut
Dimensions and sections are shown on preview pictures.
Volumes and weights (for sterling silver and without sprues):