Tianzhu (falling stone) is a kind of jewelry produced in Tibet, which contains jade, agate and crystal mineral sedimentary rock [1]. This word is a vivid translation, which means solemn, rich, precious, noble and elegant. The earliest dzi bead is the elephant-male dzi bead, which is the sacred object of Yongzhong Buddhism and the first of the seven treasures of the Tibetan people. Due to the scarcity of natural dzi beads, most of the dzi beads sold in shops are artificial handicrafts soaked with special dyes.