Preciosity
Preciosity , noun
Preciousness; something precious. [Obsolete] — Sir T. Browne
Preciosity , noun
[French préciosité, Old French also precieuseté.]
Fastidious refinement, esp. in language; specif., the affected purism and sententiousness characteristic of the French précieuses of the 17th century.
He had the fastidiousness, the preciosity, the love of archaisms, of your true decadent.