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珠宝是珍珠与宝石的总称,珍珠是砂粒、微生物进入贝壳内受刺激分泌的珍珠质逐渐形成的具有光泽的美丽小圆体,化学成分是碳酸钙及少量有机物,除作饰物外,还有药用价值．而宝石一般是指硬度在7度以上,色泽美丽,受大气及药品作用不起化学变化,产量稀少,极为宝贵的矿物,现对一些常见宝石的化学成分介绍如下:
Jewelry is a general term for pearls and gemstones. Pearls are globular and microbiological bodies of microorganisms that enter the shells and are secreted and secreted by the stimulating and secreting pearls. The chemical composition is calcium carbonate and a small amount of organic matter. In addition to jewelry, there are medicines. Use value. Gemstones generally refer to minerals that have a hardness of 7 degrees or more, are beautiful in color, cannot undergo chemical changes due to the effects of the atmosphere and drugs, and are rare in production. They are extremely precious minerals. Now the chemical composition of some common gemstones is described as follows: