Gemmological Study on Jadeite Called“Yongchuliao”in Jewelry Trade

Recently,"Yongchuliao"as a new type of jadeite appeared in Chinese wholesale market.Several"Yongchuliao"samples were collected and a series of conventional gemmological tests and large equipment tests were conducted.The testing results show that the main mineral conponent of"Yongchuliao"samples is omphacite,or with a small amount of albite.The testing results of density,refractive index and structure of"Yongchuliao"accord with the requirements of national standards in the jadeite identification features.As a result,"Yongchuliao"is a kind of omphacitic jadeite.