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/ˌæl.ɪɡˈzæn.dɹaɪt/ · noun
(mineralogy) A form of chrysoberyl that displays a colour change dependent upon the light source, along with strong pleochroism..
[…] the body of each high seat was a single jewel of monstrous size: the left-hand seat a black opal, asparkle with steel-blue fire, the next a fire-opal, as it were a burning coal, the third seat an alexandrite, purple like wine by night but deep sea-green by day.
Use alexandrite when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Alexandrite means (mineralogy) A form of chrysoberyl that displays a colour change dependent upon the light source, along with strong pleochroism..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
[…] the body of each high seat was a single jewel of monstrous size: the left-hand seat a black opal, asparkle with steel-blue fire, the next a fire-opal, as it were a burning coal, the third seat an alexandrite, purple like wine by night but deep sea-green by day.
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