A Rare Kind of Jade with Intergrowth of Ruby and Kyanite

An initial study on a kind of jade bracelet dominantly in red and blue colors recently available in the market was reported in this paper. Fourier transform infrared spectrometry and X-ray powder diffraction were used in the study. The results indicate that the jade consists mainly of ruby and kyanite, secondarily of chlorite and illite, classified as ruby kyanite jade or kyanite ruby jade. It is concluded that the formation of the jade is in relation to pneumatolytic hydrothermal fluid process.