Pearl is an ancient organic gem. Mainly produced in mollusks such as pearl shellfish and Pinctada; The calcium carbonate-containing mineral (aragonite) beads produced by endocrine function are composed of a large number of tiny aragonite crystals. According to the research of geology and archaeology, there were pearls on the earth 200 million years ago? . The international gem circle also lists pearls as lucky stones for June birthday and commemorative stones for 13 and 30th wedding anniversary. Pearls with magnificent colors and elegant temperament symbolize health, purity, wealth and happiness, and have been loved by people since ancient times.