This is a bracelet made from Himekawa Yakuseki, a stone from Itoigawa City, Niigata Prefecture. Himekawa Yakuseki is a type of igneous rock quarried from the coast of Itoigawa City, Niigata Prefecture. It has a long history of use in traditional Chinese medicine, where it was known as "Toraseki" (tiger stone) and used for treatment. Locals have traditionally believed that holding it can be beneficial when feeling unwell. It contains trace amounts of radioactive elements such as radium and thorium, and is believed to generate radioactive noble gases like radon and thoron, which are expected to have a hormesis effect (an adaptive response that provides resistance to specific substances), leading to improved immunity. Offered at a great price. 【Origin】Itoigawa City, Niigata Prefecture 【Material】Himekawa Yakuseki 【Effects】Hormesis effect, improved immunity 【Condition】Unused 【Color】Brown系 (Brown-toned) 8mm Thank you.