Inner circumference: Approximately 15-15.5 cm. Slight variations may occur. * If you wish to change the size (up to 17cm free of charge), please let us know after purchase. Larimar: 8mm x 1 Crystal button 64-faceted cut crystal: 6mm Onyx: 6mm Aquamarine: 4.8mm 64-faceted cut crystal: 8mm Rondel Aquamarine (tube-shaped) 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. 47