The act or practice of fitting something into a setting or mounting, especially in heraldry or jewel-setting.
From en- (put into) + caste/cast + -age (noun suffix). A technical term from jewelry and heraldic traditions, describing the mounting of stones or insignia.
This is a specialized word from the craft of jewelry-making and heraldry—when a gem is carefully mounted into a setting, that's encastage, and it requires precision and skill!
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