This is a Persian designer bracelet that distinguish between commoners and royalty in medieval times... it was also used by Egyptians.. it's mostly common around Arabs.
<a href="//commons.wikimedia.org/wiki/User:Jeremyida002" title="User:Jeremyida002">Jeremyida002</a>
<span class="int-own-work" lang="en">Own work</span>