PEPPERLONELY Brand 2 Strands (15 Inch/35PC/Strand) Black Stripe Malachite Green Round Shell Loose Beads 10mm-11mm Quantity: 2 Strand, Each is 38cm (15 Inch) Long, Approximately 35PC. Size: 10mm - 11mm (3/8 - 3/8 Inch) Hole size: 1mm. Thickness: 2mm-4mm Material: shell These items are made by natural shells, so the surface may looks cratered and uneven dying. It is normal phenomenon rather than quality problem.