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Sunday, April 18, 2021

Unusual Absorption In A Blue Flux-Grown Synthetic Sapphire

With UV-Vis-NIR spectroscopy, GIA researchers were able to identify the unusual spectrum. It has never been reported in blue lab-grown sapphire, either flame-fusion or flux-grown. Practicing gemologists should take note.


Useful link: https://www.gia.edu/gems-gemology/winter-2020-labnotes-unusual-absorption-blue-flux

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