Inner circumference: Approximately 15.5cm, with some margin of error. * If you wish to change the size (up to 17cm free of charge), please let me know after purchase. Larimar 9mm Crystal button Crystal 5mm Aquamarine 4.5mm Lavender Amethyst 6.5mm Aquamarine 6mm Amethyst 4.5mm 64-facet cut crystal 8mm Natural blue chalcedony heart Rondel Double strand of Ope-ron rubber * The knots in the rubber are not fixed with adhesive. If they come loose, gently pull them back in from the opposite side of the stone. The stones may have small scratches, inclusions, color variations, dents, and natural cracks. This is handmade by an amateur, so please refrain from purchasing if you are looking for perfection. 29