Please be sure to read the profile before purchasing. These are Yakushi stones from Murasugi Onsen in Niigata Prefecture. Murasugi Onsen is a hot spring resort boasting high concentrations of radium, said to be one of Japan's top 3 or 5 hot springs. It is said that the underground water passes through the Yakushi stones of Mt. Gozu, becoming hot spring water containing radium. There are a total of 4 stones. After collection, they have been washed and dried in the sun. These are rare semi-granite stones, standard semi-granite, and pegmatite. They contain trace amounts of radiation. These are genuine products, with α, β, and γ rays measured with a Geiger counter during collection. In my opinion, it is best to use them in the bath. Fill the bath with water the day before you take a bath and put the stones in it. Close the lid of the bath and leave it overnight, then just heat the bath the next day. I think you will warm up more than using bath additives. Maintenance is simply washing the stones and drying them in the sun once a week. You can use them forever just by maintaining them properly. I went to collect them the other day. I expanded the survey area and went further into the mountains, and found stones with significant metamorphic effects. In a survey 4 years ago, I also found pegmatite in the same layer and brought back a sample. I plan to bring this to a research institution in the future, and I believe that rare earth element minerals can be identified. Because it contains rare earth element minerals, the radiation dose is also high, and I have high expectations for the future. We also offer comprehensive after-sales support. We only ask that those who can make a smooth transaction do so. Please refrain from price reductions. We 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 #ImprovedImmunity #Detox #MedicinalStone ← You can see a list of products in the group.