由有机物形成的珠宝仅有珍珠、珊瑚、琥珀等,其中珍珠的价值最高,也最受消费者喜爱。目前,天然珍珠已濒临绝迹,人工养珠成为珍珠市场的主力产品。由于珍珠保养不易,消费者买回后应小心穿戴,才可避免“珠黄”的现象。珍珠是由贝类分泌的珠母质反复包襄核珠而逐渐形成的,天然珍珠是海中的贝壳或泥沙进入贝类体内,形成核珠 Organically formed jewelry only pearl, coral, amber, etc., of which the highest value of pearls, but also the most consumers. At present, the natural pearl is on the brink of extinction, and artificial pearl-raising becomes the main product of the pearl market. As pearl maintenance is not easy, consumers should be careful to wear after buying, in order to avoid the “Pearl” phenomenon. Pearl is secreted by the shellfish pearl repeated Xiang Xiang nuclear package gradually formed, the natural pearl is the sea shells or sediment into shellfish, the formation of nuclear beads