藍線石水晶

 藍線石水晶通常是指白水晶中包裹針狀藍線石含晶，且主要產自巴西。在大多數的鑑定案例中，藍線石晶體呈現淡色甚至有時呈現近乎無色。少數樣本中藍線石晶體可能呈現中等至中等深的藍色。市場上也有出現一些極淡色的藍線石水晶經染色優化處理，且通常藍色染料匯集終於表面延伸的裂隙之中。

圖1、藍線石針狀內含物裸露之水晶表面經由顯微拉曼確認其礦物相

圖2、天然色的藍線石水晶在滷素燈下拍攝

圖3、表面可見染料沈澱的染色藍線石水晶

#藍線石 #水晶 #顯微拉曼

Dumortierite quartz usually refers to the rock crystal with the dumortierite needle inclusions and is mainly produced in Brazil. In most cases, dumortierite crystals are light blue in color, sometimes near colorless. In a few cases, some dumortierite crystals show beautiful medium to medium dark blue color. There are some extremely light-colored dumortierite quartz on the market, which is color-enhanced with blue dye to create the dark blue color; usually the dye would concentrate on the surface-reaching fissures.

The inclusions was confirmed by Micro-Raman (GR7-dual-laser Raman Microscope).

#Dumortierite #Quartz #Raman

原文出處 : Tulab台灣聯合珠寶玉石鑑定中心-林書弘