Thanks!
I have read through that and measured my knuckle area, palm and wrist and even though the true measurement as described in this article is 2 3/8", when that size is on my wrist, it's too big and bangs around which is what Im trying to avoid. If I need to use soap or lotion to get the bracelet on and off I can do that, just not sure how much smaller I can go to fit properly on my wrist and still be able to get it on over my hand.
ETA: I also believe the equivalent measurements of chain bracelets on that site to be incorrect as a 49-52mm bangle is much smaller than the diameter of any of my 6" bracelets.