bangle – (noun) rigid, ring-shaped bracelet usually made without a clasp so as to slip over the hand, but sometimes having a hinged opening and a clasp.
Origin: Hindi, 1780-17901780-90; < Hindi banglī, variant of bangrī glass ring, armlet
From Dictionary.com http://dictionary.reference.com/browse/bangle
Speaking of wearing bracelets and bangles for belly dance, Tribal Fusion belly dancer Rachel Brice wears beautiful jewelry on her arms. She collects jewelry from all over the world.
Take a look at her Pinterest board, “Bracelets & Anklets,” to see some beautiful pieces.
Here’s video of Ms. Brice with arms adorned.