Welcome to "Hokutolite [Genuine from Akita] from Tamagawa Onsen"!! ☆ This is a sale of 150 grams of Hokutolite shown in images 1-14 ☆ ✨Excellent radiation levels✨ Great for making radium water (cluster water)!! With about 150 grams, you can make about 800cc by letting it sit in the refrigerator overnight✨ This size is the last one available. You can have it appraised anywhere!!! 100% genuine Hokutolite from Tamagawa Onsen. ◎ The maximum radiation level confirmed was 13.15 microsieverts. ✨The radiation level is very impressive✨ It's a small Hokutolite, so it's priced affordably✨ ★★★《Important Notes》★★★ The Geiger counter in the product image is an Inspector Alert, a measuring instrument with high sensitivity to detect radiation α, β, γ, and X-rays, making it ideal for mineral measurement. Recently, there are counters that only detect γ rays, or only β and γ rays, and naturally, they will measure lower values than the Inspector Alert. Please check the types of rays the counter can detect before measuring. ◆ The seller, born in Akita Prefecture, is selling Hokutolite inherited from their great-grandfather. ● The power of Hokutolite is invisible and expensive. There may be various anxieties about purchasing, but we will measure the radiation level right before shipping and record a video to prove it's genuine Hokutolite. We will provide the video to anyone who requests it. ＊ We can change the shipping method to hand delivery, lend you a Geiger counter, and measure the radiation level in front of you before handing it over. This service is possible because it is absolutely genuine. "Hokutolite" is a precious mineral found in only two places in the world: "Tamagawa Onsen, Akita Prefecture" and "Beitou Hot Spring, Taiwan." ♨ There are many notices about Hokutolite at Tamagawa Onsen in Akita. People from all over the country visit for rock bathing for therapeutic purposes. Several images of the location are posted. ◎ Shipping Method "Yu-Packet Plus" only, with anonymous shipping. You can use the package tracking service. You don't have to worry about "I paid, but it didn't arrive!" Mercari manages the delivery. ◎ Other ・ We accept complaints if there are any false descriptions or images, but otherwise, no claims and no returns. ・ We usually ship within the next day. It may take 4-7 days. ・ Please report receipt after arrival. If it was a good transaction, please leave a good rating. I will also give a good rating for a good transaction.