Abstract:Currently on the market, there are two kinds of yellow-green jade which are similar to turquoise "Rapeseed Yellow" varieties in appearance. The mineralogical, gemological, and spectral characteristics of the two kinds of yellow-green jade were studied by using slice observation, scanning electron microscopy, infrared spectrum, Raman spectroscopy and X-ray diffraction analysis. The results indicate that the main mineral components are alunite and apatite. The authors recommend the two kinds of yellow-green jade named apatite-alunite jade. In laboratory routine test, these jades can be distinguished from turquoise by appearance features, conventional gemological characteristics and infrared spectroscopy.