昆山片玉

Explanation: Kunlun mountain piece of jade. Was originally a humble way, meaning that only one among many wonderful person, a lot of good things after the analogy outstanding. 　　Usage: Joint type; as object, attribute; metaphor rare thing 　　Source: "But Jin Shu Shen Biography": "I give virtuous response, as in the world, still the one in Guilin, Kunshan piece of jade." Thesaurus:  And Bi Sui-chu, a thing of inestimable value, be invaluable as sth. worth a couple of towns together, wujiabao Antonym Group:  not worth a curse, not worth a penny