This is a mixed tourmaline bracelet. 9mm, inner diameter 16cm 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 promote blood circulation, reduce stress, purify the mind and body, and raise body temperature. In addition, different colors have different meanings and effects; for example, black tourmaline is good for warding off evil, and pink tourmaline is good for improving love luck. Main effects of tourmaline: