I wear a size 6 (or slightly smaller) in normal rings.  With big rings, I did not know...  you need to size up by at least half a size to get the ring over your knuckle.  I ordered this my regular size six - I have absolutely no hope of getting this on my finger without soap.  I exchanged for size 6-1/2, and I am amazed with the difference it makes when the ring actually fits!  It is very beautiful.  The fit/feel takes a bit of getting used to.  But, I love the ring.