Inner circumference: Approximately 15.5cm. Slight variations may occur. * Size cannot be adjusted. Larimar: 10mm Charoite: 10mm Sugilite: 10mm Lavender Amethyst: 8mm 64-faceted Crystal: 8mm Button-cut Crystal Rondelles 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. 10