Meaning & use
Asteria
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A gemstone, such as certain sapphires or rubies, that displays a star-shaped pattern of light when cut and polished.
See it in a sentence
The jeweler prized the asteria for the sharp six-rayed star visible at its center.
Collectors pay a premium for a well-formed asteria over an ordinary cut stone.
A note on using this word
The optical effect itself is called "asterism," caused by tiny needle-like mineral inclusions reflecting light.
Words with a similar meaning
star stone
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