Inner circumference: Approximately 16cm. Slight variations may occur. * If you wish to change the size (up to 17cm free of charge), please let me know after purchase. Larimar: 9.5mm x 1 Button-cut crystal Charoite: 8mm Sugilite: 7mm Rondel 64-facet cut crystal: 6mm Lavender Amethyst: 6mm Double strand of 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. 82