1 Strand Black Spinel Micro Faceted Rondelle 3-4mm 13" Length AAAmazing quality 100 Percent Natural (RLBS-70002) - 1 strand of 13". AAA Quality Beads. - High Quality Faceted Beads. 3-4 mm in Size - Natural Beads for DIY, Jewelry Making and Crafts - Beads temporarily strung. Use single beads or restring - Comes with a signed Certificate of Authenticity from GemMartUSAInc