Elegancy

Webster's Dictionary of the English Language

·noun That which is elegant; that which is tasteful and highly attractive.

II. Elegancy ·noun The state or quality of being elegant; beauty as resulting from choice qualities and the complete absence of what deforms or impresses unpleasantly; grace given by art or practice; fine polish; refinement;

— said of manners, language, style, form, architecture, ·etc.