台灣北投石圓珠6mm半串或1串珠子(約15英吋/37公分)
北投石
尺寸：約 6mm (+/-0.5mm)孔徑：約 1mm
顏色：象牙白、米色
北投石是一種會釋放天然輻射的天然石材，僅產於台灣的北投溫泉和日本秋田縣的玉川溫泉兩地。 在日本，它於1922年被指定為天然紀念物，1952年被指定為特別天然紀念物，現已禁止開採。 據說它因含有鐳而能釋放輻射，有益健康。 市面上常見的圓珠狀北投石是經過陶瓷加工的。 我們的產品也經過同樣的加工，具有穩定的品質、形狀和輻射釋放量。
[*圖片中的網格為1公分x1公分。]
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