Himekawa Medicinal Stone Bracelet from Niigata with Certificate of Inner Diameter [GOLD STONE] 12mm, Itoigawa, Prefecture, Japan, Authenticity,

◆Size: Diameter 12mm (0.5mm), Inner diameter approx. 155mm (±5mm) It is produced in the Itoigawa region of Niigata Prefecture and in parts of Toyama Prefecture. Rhyolite, a type of volcanic rock, also emits small amounts of radiation as radium ore. Because it emits low levels of natural radiation, it has recently been attracting attention as a stone that can provide a hormesis effect. Since these are processed natural raw stones, some beads may have dents or scratches. Please be aware of this beforehand.