Preciosity

1902, R. Langton Douglas, A History of Siena, New York: E.P. Dutton, Chapter 18, p. 385, [Italian renaissance painter Neroccio] had the fastidiousness, the preciosity, the love of archaisms, of your true decadent.

Source: wiktionary

It is […] a section of society where everybody talks and poses, where pedantry masquerades as knowledge, sentimentality as sentiment, and preciosity as delicacy and refinement;

Source: wiktionary

1916, John Cowper Powys, “Oscar Wilde” in Suspended Judgments, New York: G. Arnold Shaw, p. 416, The style of Wilde is one of the simplest in existence, but its simplicity is the very apex and consummation of the artificial. He uses Biblical language with that self-conscious preciosity—like the movements of a person walking on tiptoe in the presence of the dead—which is so different from the sturdy directness of Bunyan or the restrained rhetoric of the Church of England prayers.

Source: wiktionary

He was dressed very well and carefully, she thought, and wondered whether Arthur’s preciosity in the matter of clothing influenced his staff.

Source: wiktionary