I gave a 4 because of the sizing.  I wear a 9.5 -10 and my hubby wear a an 11.  In all of the reviews it said the rings
Run big so I ordered a 9 and 10.  Mine fits perfectly but his is way to small.  If I'd ordered an 11 for him it would have fit.
Now I have to go through the hassle of sending it back.... If a person knew the sizing was consistent with most other jewelry, ordering would be easier.  Other than that I'm totally happy!!!