The inner circumference of the bracelet is 16 cm (please allow for some margin of error). It's made of elastic rubber, so it stretches. Types of stones: Jade Amethyst Citrine Rose Quartz Crystal *Please note that the texture and color may differ from the monitor image. *As this is handmade, please refrain from purchasing if you are seeking perfection. *This item is made of natural stones, so there may be natural scratches, dents, and inclusions. Please understand this before purchasing. *Returns, exchanges, and cancellations are not accepted after an order has been placed. Please be sure to check the size before purchasing. *Shipping is only available within Japan.