Inner circumference: Approximately 15.5-16cm. Slight variations may occur. * If you wish to change the size (up to 17cm free of charge), please let me know after purchase. Larimar: 9mm Crystal Quartz: 4mm Citrine (heat treated): 6mm Peridot: 4mm Aquamarine: 6mm 64-facet cut crystal quartz: 8mm Rose Quartz: 8mm Prehnite: 6mm Rose Quartz Heart Rondel Double strand of Ope-ron rubber Larimar has slight color unevenness (see image 10). Also, some parts are not perfectly round. * The rubber knot is not fixed with adhesive. If it comes out, gently pull it back in from the opposite side of the stone. Stones may have small scratches, inclusions, color unevenness, dents, and natural cracks. This is handmade by an amateur, so please refrain from purchasing if you are looking for perfection. 68