Himekawa Medicinal Stone Bracelet 12mm Made In Niigata Prefecture Japanese Famous Stone with Certificate Inner Diameter [GOLD STONE] Itoigawa, Approx.

---------------------------------------------------------------------- ◆Size Diameter 12mm (0.5mm) Inner diameter approximately 155mm (±5mm) It is produced in the Itoigawa region of Niigata Prefecture and parts of Toyama Prefecture. Rhyolite, a type of volcanic rock, also emits trace amounts of radiation as radium ore. Because it emits low doses of natural radiation, it has recently attracted attention as a stone that can be expected to have a hormesis effect. Because we process natural raw stones, there may be dents or scratches on the grains. Thank you for your understanding in advance.