Sapphire Rondelle Beads Facet Small Genuine Med-Blue 3.5-3.9mm (Qty=18) 18 Blue Sapphire rondelle beads 3.5mm to 3.8mm diameter, about 2mm thick, small size Opaque, light goes through them, extremely rare nowadays Genuine Natural medium blue color, tiny holes, use very fine cord or wire Loose beads for jewelry making