There are many brands of jade machine carving, if they are divided into characters, auspicious animals, flowers and birds, Zigang brand and other styles in content!

From the shape point of view, there are conformal, square (purple steel brand) and round;

From the perspective of carving technology, there are intaglio carving, positive engraving, hollowing out and so on.

The key is what kind of situation you ask. Zhengzhou yuanshi county Jewelry College's answer hopes to help you!