Genesis and influencing factors of the colour of chrysoprase

Abstract The genesis and influencing factors of the colour of chrysoprase were studied based on the results of transmission electron microscopy and X-ray fluorescence, ultraviolet–visible and Raman spectroscopies. The results show that under a 6504-K fluorescent lamp, chrysoprase colour is divided i...

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Auteurs principaux:	Yuansheng Jiang, Ying Guo
Format:	article
Langue:	EN
Publié:	Nature Portfolio 2021
Sujets:	Medicine R Science Q
Accès en ligne:	https://doaj.org/article/8872c56ec0584cf3ac62dc0d96ade829
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spelling	oai:doaj.org-article:8872c56ec0584cf3ac62dc0d96ade8292021-12-02T16:57:37ZGenesis and influencing factors of the colour of chrysoprase10.1038/s41598-021-89406-x2045-2322https://doaj.org/article/8872c56ec0584cf3ac62dc0d96ade8292021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89406-xhttps://doaj.org/toc/2045-2322Abstract The genesis and influencing factors of the colour of chrysoprase were studied based on the results of transmission electron microscopy and X-ray fluorescence, ultraviolet–visible and Raman spectroscopies. The results show that under a 6504-K fluorescent lamp, chrysoprase colour is divided into the grades of fancy, fancy intense and fancy deep. The lightness of chrysoprase is affected mainly by its chromium content, the chroma is affected by its nickel content and the hue angle is affected by the sum of its chromium and ferrum contents. The colour of chrysoprase is related significantly to the transmission window that occurs between the two main bands centred at 380 and 660 nm and the absorption peaks at 380 and 660 nm in the ultraviolet–visible spectrum. Chrysoprase with low crystallinity has more nickel and a higher chroma. The inclusions that cause the chrysoprase colour have been identified as pimelite.Yuansheng JiangYing GuoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yuansheng Jiang Ying Guo Genesis and influencing factors of the colour of chrysoprase
description	Abstract The genesis and influencing factors of the colour of chrysoprase were studied based on the results of transmission electron microscopy and X-ray fluorescence, ultraviolet–visible and Raman spectroscopies. The results show that under a 6504-K fluorescent lamp, chrysoprase colour is divided into the grades of fancy, fancy intense and fancy deep. The lightness of chrysoprase is affected mainly by its chromium content, the chroma is affected by its nickel content and the hue angle is affected by the sum of its chromium and ferrum contents. The colour of chrysoprase is related significantly to the transmission window that occurs between the two main bands centred at 380 and 660 nm and the absorption peaks at 380 and 660 nm in the ultraviolet–visible spectrum. Chrysoprase with low crystallinity has more nickel and a higher chroma. The inclusions that cause the chrysoprase colour have been identified as pimelite.
format	article
author	Yuansheng Jiang Ying Guo
author_facet	Yuansheng Jiang Ying Guo
author_sort	Yuansheng Jiang
title	Genesis and influencing factors of the colour of chrysoprase
title_short	Genesis and influencing factors of the colour of chrysoprase
title_full	Genesis and influencing factors of the colour of chrysoprase
title_fullStr	Genesis and influencing factors of the colour of chrysoprase
title_full_unstemmed	Genesis and influencing factors of the colour of chrysoprase
title_sort	genesis and influencing factors of the colour of chrysoprase
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8872c56ec0584cf3ac62dc0d96ade829
work_keys_str_mv	AT yuanshengjiang genesisandinfluencingfactorsofthecolourofchrysoprase AT yingguo genesisandinfluencingfactorsofthecolourofchrysoprase
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Genesis and influencing factors of the colour of chrysoprase

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