Raman spectroscopy is a convenient, efficient, and non‐destructive technique that could estimate the metamictization degree of zircon, particularly for gem‐class or historical samples. The full width at half maximum value of the ν₃(SiO₄) band around 1000 cm⁻¹ can classify the structural state of zircon as crystallized (the full width at half maximum value is less than 5 cm⁻¹), intermediate (the full width at half maximum value ranges from 5 to 15 cm⁻¹), and metamict (the full width at half maximum value is more than 15 cm⁻¹). This study focuses on the zircon samples from Sri Lanka in the gemological collection of Abraham Gottlob Werner. These samples show red to green, according to the Munsell color system and the CIEL*C*h* color system, and their density is from 4.07 to 4.87 g/cm³. Comparing the color and metamictization degree data of zircon samples, crystallized zircon displays a more red tone with yellow. The green tone in zircon occurs with metamictization. The density of zircon could be an indicator of the metamictization degree as crystallized zircon is 4.57 to 4.70 g/cm³ in a 95% confidence interval, which matches the theoretical density (4.61–4.76 g/cm³) better, whereas metamict zircons present a density of 4.37–4.59 g/cm³, and the density of zircon decreases with metamictization. The metamictization has a significant influence on the gemological properties of zircon, whereas the typical color tone and low density can be a sign of the metamictization.

中文翻译：

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成矿作用对天然锆石宝石学特性的影响：亚伯拉罕·戈特洛布·维尔纳宝石收藏中锆石的拉曼光谱研究

拉曼光谱法是一种方便，有效且无损的技术，可以估算锆石的成矿程度，特别是对于宝石级或历史样品。在ν的半最大值全宽₃（SIO ₄）带围绕千厘米^-1可以锆石的结构状态分类为结晶（半最大值全宽小于5cm ^-1），中间体（所述半最大值的全宽度范围从5到15 cm ^-1，并且是隐喻的（半最大值的全宽度大于15 cm ^-1）。这项研究的重点是斯里兰卡的亚伯拉罕·戈特洛布·维尔纳（Abraham Gottlob Werner）宝石收藏中的锆石样品。根据孟塞尔（Munsell）色系和CIEL * C * h *色系，这些样品显示为红色至绿色，其密度为4.07至4.87 g / cm ³。比较锆石样品的颜色和成矿程度数据，结晶的锆石显示出更多的红色和黄色。锆石中的绿色调随着成矿作用而出现。锆石的密度可能是成矿程度的指标，因为结晶的锆石在95％的置信区间内为4.57至4.70 g / cm ³，这与理论密度（4.61–4.76 g / cm ³）更好地匹配，而存在的成矿锆石密度4.37–4.59 g / cm ³，锆石的密度随成矿作用而降低。成矿作用对锆石的宝石学特性有重大影响，而典型的色调和低密度可能是成矿作用的标志。