As can be seen from the above picture, this kind of small Huanglong jade carving is usually not worth the price, but it is obviously expensive. Huang Longyu, the main component: SiO2, containing a small amount of Fe2O3, Al2O3, K2O, Cu, Mn, hardness: 6.5-7, usually slightly transparent, with waxy luster or glassy luster, divided into yellow, red, black and white (gray) according to colors. Huang Longyu produces a lot. In recent years, prices have been rising due to speculation. Personally, I don't think there is much room for appreciation of non-famous carvings, so it is necessary to be cautious to invest in this kind of jade.