The original 3DM ring is in US size7.50, and the STL files range from size 5 to size 10, including half sizes (5, 5.5, 6, 6.5 … up to 10).12 render images ( 4 view in 3 colors-yellow/white/rose)

3d models- 3dm, stl, obj, and fbxdetails- gem details, dimenstion and metal wt (check imges)