Bangle measurement is measured using the hand rather then the wrist. Compared with other kinds of bracelets, bangles are rigid and should be huge ample to slide over your hand but not so huge as to slide off in the wrist or arm. The second system is named CVD (or https://etsy-diamond-jewelry81582.pointblog.net/the-2-minute-rule-for-etsy-diamond-jewelry-69046890