Hokutolite is a rare stone found only in the Beitou hot spring in Taiwan and the Tamagawa hot spring in Akita Prefecture. It generates negative ions and is attracting high attention from the medical industry as a medicinal stone. [Materials] ・Phosphosiderite...approx. 10mm ・Hokutolite (Taiwanese: Ion tested)...8mm ・Turquoise (Authentic, authenticated)...8mm ・Cut crystal [Size] Inner diameter approx. 17cm [Notes] ◆Photographed without processing. ◆Will be purified with a crystal cluster before shipping. ◆Simple shipping (bubble wrap + envelope) ◆Instant purchase OK, first come, first served. #Tranquility #Peace #Amulet #Stability