火瑪瑙圓珠6毫米半串或1串珠（約15英寸/38厘米）
其他圓形寶石
尺寸：約 6 公釐（+/-0.5 公釐）
孔徑：約 1 公釐
顏色：黑色、灰色
有些飾品可能存在原石本身造成的瑕疵。
這些是來自印尼爪哇島的 Agnimanitite 圓珠。Agnimanitite 在印尼廣泛分佈，被認為是一種新發現的隕石撞擊起源的天然玻璃「Tektite」。然而，其中大部分實際上是「黑曜石」，一種火山噴發起源的天然玻璃。我們認為，這種誤解的產生是因為 Agnimanitite 原石不像典型的黑曜石那樣以大塊形式存在，而是以與 Tektite 極為相似的小塊形式存在。
由於印尼的地域特徵，Tektite 可能會少量混入。然而，礦工不可能在沒有對每塊進行成分分析的情況下區分 Tektite 和黑曜石。因此，大多數廣泛分佈的 Agnimanitite 被認為是黑曜石。我們曾嘗試從三個不同來源獲取 Agnimanitite，包括加工前的原石，所有鑑定結果均為黑曜石。
此商品也已鑑定，結果為 「天然玻璃（黑曜石）」。
儘管如此，它仍然是一種罕見的天然玻璃，外觀獨特，類似於 Moldavite 和 Tektite，並以「Agnimanitite」的商品名稱備受珍視。因此，我們將繼續將其作為印尼 Agnimanitite 出售。
[*圖片中使用的網格為 1 公分 x 1 公分。]
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