This is a mixed tourmaline bracelet. 9mm, inner diameter 16cm ¥300 off for purchases of 3 or more items! When requesting a combined purchase, please request with the price reduced by ¥300. Tourmaline is a power stone with properties such as far-infrared radiation, negative ion generation, and static electricity suppression. Due to these properties, it is expected to have effects such as promoting blood circulation, reducing stress, purifying the mind and body, and increasing body temperature. In addition, different colors have different meanings and effects. For example, black tourmaline is said to be good for warding off evil, and pink tourmaline is said to be good for improving love luck. Main effects of tourmaline: