Inner circumference approximately 15cm, with some margin of error. * If you wish to change the size (up to 17cm free of charge), please let me know after purchase. Madagascar Rose Quartz 10.3mm Button-cut Crystal Prehnite 6mm Peridot 4mm Crystal 6mm Aquamarine 4.5mm Lavender Amethyst 6mm White Moonstone 8mm Aquamarine 6.5mm Amethyst 4.5mm Citrine (heat treated) 6mm Aquamarine 9.7mm Double strand of Ope-lon elastic rubber * The knots in the elastic 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. 86