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 us know after purchase. Rhodochrosite: 9mm Button-cut crystal Crystal: 6mm Peridot: 4mm New Jade: 6mm Lavender Amethyst: 6mm Amazonite: 8.5mm 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. 32