人们常以“珍珠、玛瑙”显示其富贵,其实,在现代玛瑙的价值并不高,因其量大而普遍使用,所以它是一种普通的宝石。但是,由于一些玛瑙的花纹和颜色多样绚丽,却是技艺高超的玉器大师们显技的极好舞台,而常能使普通的玛瑙跃身成为珍贵的艺术珍品。玛瑙是二氧化硅的胶体溶液,在天然岩石的空洞裂隙中一层层或 People often use “pearl, agate” to show their wealth. In fact, the value of modern onyx is not high, because it is large and commonly used, so it is an ordinary gem. However, because some agate patterns and colors are colorful, it is an excellent stage for superb jade masters to show their skills. Ordinary agate can often become a precious art trek. Onyx is a colloidal solution of silica, a layer or layer of porosity in the natural rock