Good quality walnuts are delicate and hard, and the new walnuts sound strong and feel heavy when they collide. Old walnuts are as smooth as suet jade and collide like stones.
"Shape" refers to the lines that match walnuts. The closer two walnuts are, the more precious they are. The density and distribution of lines, the width and thickness of edges are important factors to measure playing with walnuts.
"Color" refers to the different colors of walnuts in different periods, and the old walnuts will show a transparent color similar to ruby.
It should be noted that there are some colored walnuts on the market. In fact, they haven't played for a long time and need to be carefully identified. A simple way is to rub it hard with your fingers. Old walnuts will have bright spots, but new walnuts will have no bright spots when colored. This is what collectors say about the popularity of walnuts.
"Ge" refers to the size of a walnut. Generally speaking, the bigger the walnut with good appearance, the more valuable it is, but the special-shaped walnut is the most exquisite in pairs. There are no identical walnuts in the world, just as there are no identical eggs in the world. Often a train of walnuts can't pick out a pair of identical walnuts. Pairing requires great patience and opportunity, so a pair of paired special-shaped walnuts is often valuable.
Extended data:
Brush the walnut six times and three times, and give it the rest to settle down. Whether it is rubbed or not, it can only be rubbed to the surface of walnuts. You can't knead the concave part of the walnut. When wiping new walnuts, it is best to prepare three brushes, one brush, two brushes and three dusts. The first one is best to use a hard brush and rub it a little hard. The second brush should be completely brushed with a slightly harder brush, and the third brush should be lightly brushed with slightly longer and softer bristles, which will make the walnut skin brighter.
If you want to knead a pair of bright and ruddy walnuts, laying a good foundation is the key. In order to lay a good foundation, it is most important to clean walnuts in the initial stage. At the beginning, you should rub, rub and brush walnuts with your heart. If you really want to wipe six points, brush three points and protect the remaining one. When you are not ready to rub, wrap the walnuts with a small cloth, or wrap them with a handkerchief and use a plastic bag.
Baidu Encyclopedia-Wan Wen Walnut