我国古书中多有提及的蓝田美玉,是那样诱人,又似乎是个难解之谜。古时陕西蓝田是否真有那样的美玉?世上古玉中哪些是蓝田玉?有人认为,近年在陕西蓝田发现的蛇纹石化大理岩就是古人称重的蓝田美玉,其实并菲如此。若想了解古时的蓝田玉,必须先弄明白古人所称的玉指的是什么?古人所称的真玉汉代许慎给玉下了明确定义:“玉,石之美者。玉有五德:润泽以温,仁之方也;鳃理自外可以知中,义之方也;其声舒扬专以远闻,智之方也;不挠而折,勇之方也;锐廉而不技,洁之方也。”其实古人区别真玉与假玉,远比汉代要早。春秋时孔子与其学生子贡有这样一段对话:“子贡问于孔子日:敢问君子贵玉而 Lantian Meiyu mentioned in ancient Chinese books is as attractive as it seems to be a mystery. Some ancient jade in the world which is Lantian jade? Some people think that in recent years, found in Lam Tin, Shaanxi Province serpentine marble is the ancients weigh the blue jade field, in fact, the Philippine so. If you want to understand the ancient Lantian jade, you must first understand what the ancients called Jade refers to what the ancients called the true jade Han Xu Shen to Jade under a clear definition: ”Jade, the stone of the United States. : Moist and warm, the kernel of the party also; gills from the outside can know, the righteous party also; its sound Shu Yang specializes in far, wisdom of the party also; not inflexible and folded, the courage of the party also; , Jie Jie side also. “In fact, the difference between the ancient real jade and jade, far earlier than the Han Dynasty. Spring and Autumn Confucius and his son Gong Gong has such a dialogue: ”Zi Gong asked in Confucius Day: dare to ask gentleman Guiyu