Due to historical and geographical reasons, Yunnan has formed a jewelry and jade distribution center with Kunming as the center and Tengchong, Ruili, Yingjiang and mangshi as the support. In Kunming alone, there are tens of thousands of companies and shops dealing in jewelry and jade, and the varieties of corundum gems are ruby and sapphire; Beryl includes emerald, aquamarine, diamond, garnet (purple tooth black), tourmaline amethyst, topaz, opal, olivine, turquoise, malachite, Dushan stone, flint, agate and pearl. Jewelry and jade are becoming a major industry in Yunnan, enjoying a good reputation at home and abroad. Jade is the most famous jewelry in Yunnan, and its varieties include ring face, heart of chicken, eye of horse, apricot, gold ingot, jade bracelet, pagoda bead necklace, lantern, flower piece, "five-color star" (i.e. hoop heart with five colors of red, green, blue, yellow and white) and "eight treasures" (symbolizing happiness, longevity and happiness).