Explaining Colour Change in Pyrope-Spessartine Garnets

A colour-changing garnet exhibits the “alexandrite effect”, whereby its colour changes from green in the presence of daylight to purplish red under incandescent light. This study examines this species of garnets as well as the causes of the colour change by using infrared and ultraviolet visible (UV...

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Bibliographic Details
Main Authors: Yan Qiu, Ying Guo
Format: Article
Language:English
Published: MDPI AG 2021-08-01
Series:Minerals
Subjects:
Online Access:https://www.mdpi.com/2075-163X/11/8/865