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Identification of a Convincing Yellowish Green Jadeite Imitation with Strong Fluorescence Composed of Wollastonite and Soda–Lime–Alumina–Silica Glass
Abstract
Jadeite is a sought-after jade mineral that is often imitated using natural and artificial materials. A jadeite imitation that is convincing to the naked eye is investigated. The imitation is yellowish green and white, subtranslucent, and exhibits a vitreous luster. Standard gemological testing and spectral characterization revealed the composition to be wollastonite and soda–lime–alumina–silica glass. The wollastonite was added during the sintering process, making it different to wollastonite glasses prepared by devitrification in earlier reports. The findings demonstrated that shifted excitation Raman difference spectroscopy is a cost-effective, efficient, and nondestructive technique for identifying gemstones and their imitations, particularly those showing strong fluorescence.
Supporting agencies: This work was supported by the NGTC Chief Scientist Apprenticeship Program (Grant No. NGTC20200909).
About the Authors
K. Gao
School of Gemology, Guangzhou Panyu Polytechnic;
Shenzhen Research Institute, National Gems & Jewellery Technology Administrative Center (NGTC)
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Guangzhou;
Shenzhen
gaok@gzpyp.edu.cn
X.Y. Quan
China United Test & Certification Co. Ltd.
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Китай
Beijing
R. Liang
Shenzhen Research Institute, National Gems & Jewellery Technology Administrative Center (NGTC)
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Shenzhen
Y. Yuan
School of Gemology, China University of Geosciences in Beijing
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Beijing
L.L. Gao
School of Chemistry and Chemical Engineering, Ningxia University
Китай
Китай
Yinchuan
T.J. Lu
Beijing Institute, NGTC
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Китай
Beijin
M. Y. Chen
Shenzhen Research Institute, National Gems & Jewellery Technology Administrative Center (NGTC)
Китай
Китай
Shenzhen
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For citations:
Gao K., Quan X., Liang R., Yuan Y., Gao L., Lu T., Chen M.Y. Identification of a Convincing Yellowish Green Jadeite Imitation with Strong Fluorescence Composed of Wollastonite and Soda–Lime–Alumina–Silica Glass. Zhurnal Prikladnoii Spektroskopii. 2024;91(1):159.
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