合成亞歷山大石 AAA 裸石 圓形刻面 3x3mm 1顆
亞歷山大石
1顆：約0.14克拉
尺寸：約3x3x1.8毫米
未鑽孔（裸石）
顏色：藍綠色
這是一顆圓形刻面合成亞歷山大石。它是利用「柴可拉斯基法」（晶體拉製法）生產的，這種方法採用半導體技術來生長超純單晶。其最重要的特點是其戲劇性的變色現象。在自然光下，它呈現深藍綠色，而在白熾燈下，它會鮮豔地轉變為紅紫色（第三張圖片是在白熾燈下拍攝，第四張圖片則是在黑光燈下拍攝（峰值波長395納米））。作為珠寶用的裸石，其透明度和顏色都無可挑剔。由於它是一種未鑽孔的類型，非常適合鑲嵌和其他加工。另一種尺寸已經過鑑定，結果為「合成亞歷山大石」。
[*圖片中的網格為1厘米x1厘米。]
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