Inner circumference: Approximately 15.5cm. Slight variations may occur. * If you wish to change the size (up to 17cm free of charge), please let me know after purchase. Larimar 10mm Button-cut crystal Peridot 4mm 64-facet cut crystal 6mm Aquamarine 6mm Lavender Amethyst 6mm White Moonstone 8mm Tanzanite 4.5mm Iolite 6mm Aquamarine tube-shaped Double-strand Ope-ron rubber * The knots in the rubber are not secured 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. 70