jennysun2010&nbsp;Natural Black Obsidian Gemstone 3mm Smooth&nbsp;Round&nbsp;Loose&nbsp;Beads Length&nbsp;15.5''&nbsp;Inches&nbsp;(38.5cm)&nbsp;1&nbsp;Strand&nbsp;per&nbsp;Bag&nbsp;for&nbsp;Bracelet&nbsp;Necklace&nbsp;Earrings&nbsp;Jewelry&nbsp;Making&nbsp;Crafts&nbsp;Design&nbsp;Healing