Worry Beads Black-Silver Obsidian Round with 21 Beads 10 mm.

This is volcanic glass originating from Ethiopia, with its name linked to Obsius, the first to bring it. When it comes from New Mexico, it is called "Apache Tears".

Obsidian was used from the Paleolithic and Neolithic eras for making tools, such as arrows, with the oldest findings dating back to 7000 BC. In historical times, this material was used purely for decorative purposes.