Designed for 3d Printing.
STL files have sharp edges for jeweler fine work.
All gemstones enlarged to 5-10% for shrinking.
Woman rings STL actual size(mm) is:
US 5 3/8 (16.0mm) US 6 1/2 (17.0mm) US 7 3/4 (18.0mm)
Men ring STL actual size(mm) is:
US 9 1/8 (19.0mm) US 10 1/4 (20.0mm) US 11 3/8 (21.0mm)
All specs and dimensions for rings can be found on last image.
If you need another size for ring - contact me, it's free once time.
Do not forget you always can negotiate final price.