one in a thousand

one in a thousand

 and one in a hundred; one in a million
Fig. nearly unique; one of a very few. He's a great guy. He's one in million. Mary's one in a hundredsuch a hard worker.
See also: one, thousand
References in classic literature ?
in spite of what she had done) that the girl was one in a thousand, and that she only wanted a chance to prove herself worthy of any Christian woman's interest in her.
You are quite right," he replied; "but do not felicitate yourself too quickly should you be sent to the arena, for there is scarce one in a thousand who comes out alive.