Moreover, it has no significance of origin. (Everything else is misleading. The national standard of jewelry and jade names (GB/T 16552-20 10) doesn't name Huang Yushi Huang Longyu, but the international standard topaz is named Huang Longyu. This is the original text of the national standard for jewelry and jade names (GB/T 16552-20 10), which clearly stipulates that the name of jewelry and jade does not have the meaning of origin. Moreover, it is clearly stipulated that "this standard is applicable to the fields of jewelry and jade identification, cultural relics, commerce, customs, insurance, pawn, asset evaluation, scientific research and teaching, and literature publishing." In other words, related books, local publicity, local standards and other aspects that contradict the national standard have become the past (that is, invalid). —— To put it bluntly, the promulgation of the national standard is not to affirm Huang Longyu in Longling, but to govern Huang Longyu in Longling; At the same time, it affirmed the international standard of topaz's higher quality. In China, the whole world can't afford to buy cotton, soak oil or wipe oil, so it was officially named Huang Longyu. Exactly: "Wildfire never completely devoured them, but they grew tall again in the spring breeze" and "shine on you is better than blue". Numerous practices and theories have proved that Huang Longyu's appreciation can draw such a conclusion: cotton picking, oil soaking and oiling are all very inferior jade articles, which are worthless. Because jade is extremely poor, full polishing will reveal an ugly face, so it is polished; Because cotton picking is too thick like bean curd residue, it is oiled and soaked. There is no jewelry beauty and collection value to wear at all. All the good jewelry and jade articles in the world, excellent and reliable manufacturers and merchants will be fully polished to the extreme, so that the beauty of jewelry and jade will be fully displayed and will not be oiled. Oiled, soaked in oil and picked with cotton must have a bad texture. This is olivine (quartzite), not Huang Longyu. The output of chrysotile (quartzite) on the earth is several hundred times higher than that of chrysotile. Chrysotile asbestos without oiling and foam is Huang Longyu. Origin is not the basis for identifying Huang Longyu, but high quality is a narrow superstition of jewelry origin. If you are not stupid, you will buy Huang Longyu by mistake. Never buy topaz, but topaz is not from Huang Longyu, and it is oily, like bean curd residue.