After returning a size 9 that fit too small, I got this in a size 10 and it fits just fine on my index finger. Definitely you need to order up 1 size for the finger intended. Also, there is a lot of variation in the purple fluorite -- the ring I finally kept is mostly a deep eggplant purple with a few lavender streaks. I also like the curling stem and leaf design on the sides of the band, which is sort of a matte finish. The wide band is comfortable and tapers from about 3/8" wide next to the stone, to 1/4" wide underneath, making it easy to bend the finger. I hope Jay will get more purple stones, I will be watching for them!