First, the materials meet the requirements of "Meishi";
Second, it has the basic style of typical jade ware in shape;
Third, the jade articles made must be made by special jade making methods, such as grinding, drilling and other technologies, rather than ordinary stone making techniques. Moreover, the jade objects studied should have a certain historical age, and its historical and cultural value must be emphasized.
colour
Nephrite mainly includes white jade, bluish white jade, topaz, purple jade, black jade, jasper, sapphire, ruby, etc. Among them, topaz is a good product with the color of engine oil, purple jade is usually a light powder, black jade is actually a jade with many black spots on the jasper, and blue jade is actually a pale blue white jade. White jade is usually the best.
Jadeite is emerald with white, purple and green colors. It can be called Bingdi'er (white) or Qingdi'er (green). Green is the best. The tricolor jadeite is also known as "Taoyuan Jieyi" or "Fu Lu Shou".
