Resembling or relating to diamonds; having qualities like diamonds such as brilliance, hardness, or clarity.
From Latin diamant- 'diamond' + -ine suffix 'resembling.' A poetic or technical adjective used in literature and gemology to describe diamond-like qualities.
Diamantine describes not just appearance but moral qualities too—poets use 'diamantine truth' or 'diamantine character' to suggest something that's brilliant, unbreakable, and impossible to cloud—borrowing diamonds' metaphorical power.
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