台灣北投石勾玉 30x20毫米 1顆
北投石
尺寸：約 28-30x18-20x9-9.5毫米（+/-0.5毫米）
孔徑：約 3毫米
顏色：米色
北投石會釋放天然輻射，僅在兩處地點發現：台灣的北投溫泉和日本秋田縣的玉川溫泉。在日本，它於1922年被指定為天然紀念物，1952年被指定為特殊天然紀念物，現在已禁止開採。據說它因其鐳含量而釋放輻射，這被認為有益健康。
市面上常見的北投石珠子是經過陶瓷加工的。我們的產品也經過類似加工，特點是品質、形狀和輻射釋放穩定。這是我們商店根據客戶要求，原創開發並商業化的產品。
[*圖片中的網格為1公分x1公分。]
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