Hokutolite Necklace Stone size: Approximately 4.0mm A storage bag will be included as a bonus. Shipping is planned via Yu-Yu Mercari Bin Yu-Packet Post Mini or Kuraku Mercari Bin Nekopos. The box in the back is something I was keeping, so it will not be included (please understand that it is also stained). The product in the image is the actual item. It has not been taken out of the bag. I heard it was made in Japan. I think the length was about 40cm. Hokutolite is a product made by firing ceramic. The black spots are said to be radium ore. I am a layman, so I don't know much, but according to the shop staff, it is a stone that is said to boost immunity and metabolism. I bought it for my mother for 11,000 yen because she was getting mouth ulcers at the time, but I couldn't give it to her on Mother's Day, and she had recovered, so I gave her something else, so I decided to sell this. I've heard it has therapeutic effects. Also for anti-aging. I purchased this after having the readings shown to me with a machine that measures radon. [Explanation of Hokutolite] Hokutolite is barium sulfate containing lead (lead-containing barite) that is found only in the Beitou Hot Spring in Taiwan and the Tamagawa Hot Spring in Akita Prefecture. It is thought to be formed by the accumulation of sediment from the hot spring source. In 1898, geologist Hirozaburo Sakurai discovered it at Tamagawa Hot Spring in Akita, and in 1907, Yohachiro Okamoto discovered a similar stone at Beitou Hot Spring in Taiwan, and it was named Hokutolite. Tamagawa Hot Spring is said to have been discovered by local Matagi hunters in the old days. It was called "Deer Hot Spring" because deer were healing their wounds in the hot spring, and its effectiveness quickly became known when it opened as a therapeutic spa (※ At the time of the discovery of Hokutolite, it was called Shibiguro Hot Spring, later Tamagawa Hot Spring). The spring quality is a radium hot spring that has radioactivity, and Hokutolite also has a small amount of radiation and is said to emit radium emanation (radon). This radon is said to have the effect of activating cells, and Hokutolite is called a "medicinal stone." Hokutolite was designated as a natural cultural landscape in Taiwan in 2000, and as a natural monument in Japan in 1922, and as a special cultural property in 1952. I basically try to ship the next day, but there are some dates when I cannot ship due to work. Please be sure to check my profile before purchasing ( ⁎ᵕᴗᵕ⁎ ) Peccori #Radon #TherapeuticSpa #AntiAging