多步骤处理富氢绿色金刚石

IF 1.6 3区地球科学 Q2 MINERALOGY

Gems & Gemology Pub Date : 2019-11-01 DOI:10.5741/gems.55.3.398

Wenqing Huang, Pei-ran Ni, Ting Shui, Guanghai Shi

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引用次数: 1

摘要

用显微镜和光谱技术进行了表征。这颗钻石已被明确地鉴定为经过颜色处理的。同时存在多个与辐照和退火相关的中心，包括H1a、H1b、NV0、NV -、H3、H4、GR1和h2。紫外-可见-近红外光谱分析表明，金刚石的颜色是由与H3和GR1相关的两个主要波段决定的。这些光谱特征在一颗钻石上的结合在宝石学文献中尚未报道，这表明这颗钻石经历了一种不常用的复杂处理程序。考虑到所涉及缺陷的热稳定性和缺陷在高温下的转变，提出了两种可能的处理方法来解释所观察到的光谱特征组合。

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Hydrogen-Rich Green Diamond Color-Treated by Multi-Step Processing

been characterized using microscopy and spectroscopic techniques. The diamond has been unambiguously identified as color-treated. The simultaneous presence of multiple centers related to irradiation and annealing—including H1a, H1b, NV0, NV–, H3, H4, GR1, and H2—was revealed. UV-Vis-NIR absorption spectroscopy showed that the diamond owes its color to the two major bands related to H3 and GR1. The combination of these spectroscopic features in one diamond has not been reported in the gemological literature, suggesting that this diamond was subjected to a complex treatment procedure that is not frequently applied. Taking into account the thermal stability of the defects involved and the defect transformations at high temperatures, two possible treatment procedures explaining the observed combination of spectroscopic features are proposed.

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来源期刊

Gems & Gemology 地学-矿物学

CiteScore

2.90

自引率

19.20%

发文量

期刊介绍： G&G publishes original articles on gem materials and research in gemology and related fields. Manuscript topics include, but are not limited to: Laboratory or field research; Comprehensive reviews of important topics in the field; Synthetics, imitations, and treatments; Trade issues; Recent discoveries or developments in gemology and related fields (e.g., new instruments or identification techniques, gem minerals for the collector, and lapidary techniques); Descriptions of notable gem materials and localities; Jewelry manufacturing arts, historical jewelry, and museum exhibits.