The impact of trace metal cations and absorbed water on colour transition of turquoise

Thirty-five gem-quality turquoise samples with various colours were investigated using energy-dispersive X-ray fluorescence spectroscopy, ultraviolet–visible spectroscopy, Fourier-transform infrared spectroscopy and scanning electron microscopy. Sample chemical and spectral analyses indicate that Fe...

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Bibliographic Details

Published in:	Royal Society Open Science
Main Authors:	Xueding Wang, Ying Guo
Format:	Article
Language:	English
Published:	The Royal Society 2021-02-01
Subjects:	turquoise ed-xrf uv–vis spectra ftir colour difference
Online Access:	https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.201110