The Rongli tremolite jade deposit is the only high-grade nephrite deposit in Guizhou Province, which was discovered in the last year by the authors. The Rongli nephrite deposit occurs in the contact metamorphic belt between basic rock and flint limestone. The tremolite content of the ore exceeds 95%. The nephrite jade has radiated fibrous blastic texture, felt-like blastic texture and compact massive structure. White jade, grayish white jade and gray jade constitute major species of the Rongli jade, which has weak greasy and greasy luster as well as rare wax luster. The ore bodies are large, and the nephrite jade is of top quality. The Rongli nephrite jade is genetically different from Hetian jade and Qinghai nephrite jade in that the Rongli tremolite jade deposit resulted from contact metasomatism between basic intrusive rock and calcium carbonate rock, thus belonging to a new genetic type of tremolite jade deposit discovered for the first time in China. The Rongli jade has important research value and favorable exploration and utilization prospects.