Please be sure to read the profile before purchasing. This is Nagara River Yakuseki Akatora (Red Tiger) from Niigata Prefecture. It was collected from the upper reaches of the Nagara River. After collection, it has been washed and dried in the sun. This is a very rare medicinal stone with a beautiful red color. This red color is due to the iron content. The quartz, which would normally come off, remains almost completely intact. This is a genuine product, with the radiation dose (α, β, γ rays) measured with a Geiger counter at the time of collection. We measure it a total of 3 times: at the time of collection, after washing and drying, and at the time of listing, and we only sell items that pass the standards. Please rest assured that we do not sell items without specifying the radiation dose, nor do we sell items that do not show any radiation. I have compared it with a standard Nagara River Yakuseki in image 7. Images 8-11 show the stone wet. I had never seen a Nagara River Yakuseki Akatora before, so I was surprised when I found it. It's truly a family treasure. You can use it in the bath, but I think it also has value as a power stone. When using it in the bath, fill the tub with water the day before and put the stones in it. Cover the bath with a lid and leave it overnight, then just heat the bath the next day. I think it will warm you up more than using bath additives. Maintenance is simply washing the stones and drying them in the sun once a week. You can use it forever just by doing proper maintenance. I will answer your questions to the best of my ability. If you don't know what to buy, please consult with me. This is something you can use for a long time once you buy it, so please purchase it after you are satisfied. Only those who can make a smooth transaction are welcome. Please refrain from price reductions. I have many other items for sale. Please take a look at the list of products. For genuine medicinal stones, please use the Doctor Stone Group. #Radium #RadiumOre #MedicinalStone #Hormesis #WarmUp #SensitivityToCold #ImmunityBoost #Detox #MedicinalStone ← You can see a list of group products.