Of, relating to, or exhibiting the properties of dichroite or dichroism; showing two-color phenomena.
From 'dichroite' plus the suffix '-ic' (relating to or characterized by). This technical adjective describes minerals and materials with dichroic properties.
Dichroitic minerals like cordierite are geological proof that matter responds to light in wildly different ways depending on its crystal structure—it's why the same stone can look like a completely different gem when you twist it in sunlight.
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