I am currently wearing a size 5 and it almost fits perfect. If I put on a 4.5 it is way to tight. Some days my ring fits perfectly, and other days it is falling off into somebody's groceries at work. I work service desk at a grocery store and also help bag. I would like to get sizing beads but I am not sure if I should have Zale's do it, which is where I bought my ring or go somewhere else. Do other jewelry stores size rings that have not been purchased by them?