The phrase "a peculiar quality" is correct and usable in written English.
You can use it to describe a distinctive or unusual characteristic of a person, object, or situation.
Example: "The painting had a peculiar quality that drew the viewer in, making them ponder its deeper meaning."
Alternatives: "an unusual trait" or "a distinctive feature."
There is a peculiar quality to the animal-rights activism on Facebook.
There are over a hundred & fifty thousand people in Greater Georgetown, and yet the city has a peculiar quality of having been abandoned.
Buchanan, in the words of Nick Carraway, the narrator of "Gatsby," is a man of "hard malice" with a "peculiar quality of oppressiveness".
But there is a peculiar quality of claustrophobic horror in Jewish reflections on the matter, for they are the chosen people whose whole history is of wrangling with God; yet an omnipotent God singled them out for this dreadful fate.
In his play Every Man Out of His Humour (1599), Jonson explains that the system of humours governing the body may by metaphor be applied to the general disposition, so that a peculiar quality may so possess a person as to make him or her act in one way.
Mervyn Peake, minus the magnification; dehydrated Pinter; Stoppard that won't soar … This is not to slight Mills – quite the opposite – but to point to a peculiar quality in his work, which summons up such names while steadfastly rejecting the grandiloquence of their underlying artistic agendas.
It was an oppression probably harsher than any in Eastern Europe, a harshness whose peculiar quality was its pervasive, impenetrable obscurity.
He gloatingly asks how "an amoral datum called law could have the peculiar quality of creating an obligation to obey it" (Fuller, 1958).
Jonson distinguished two kinds of humour: one was true humour, in which one peculiar quality actually possessed a man, body and soul; the other was an adopted humour, or mannerism, in which a man went out of his way to appear singular by affecting certain fashions of clothing, speech, and social habits.
Some one peculiar quality Doth so possess a man, that it doth draw All his affects, his spirits, and his powers, In their confluctions, all to run one way.
And then there is the silence … the hush has a peculiar muffled quality, like being in a recording studio with headphones on.
