With the development of the economy, the improvement of people's living standards, and the transformation of aesthetic concepts, people are very fond of the natural and gorgeous decorative effects. Stone products have gained the favor of consumers due to their excellent physical properties, natural color and texture that are different from other stones, processing performance, and gorgeous and solemn decorative effects. They are widely used in art carving, daily necessities, building installation, home decoration, and other aspects, as well as in the application of architectural decoration, such as carving, Roman columns, arches, fountains, mosaics, etc., which highlight the elegant and solemn atmosphere of buildings, become a manifestation of noble status, and win the hearts of consumers and designers, with usage increasing year by year. In addition, various irregular natural stones, with their artistic qualities, add an elegant and atmospheric grade and artistic atmosphere to the entire building, like adding the finishing touch. Some decorative items such as artistic washbasins, flower pots, coffee tables, fireplaces, carvings, etc. are increasingly integrated into people's lives, further improving their quality of life and artistic style.

1) Irregular products with the same cross-section, regardless of their main body cross-section and shape, can be cut along the vertical plane of the column axis to obtain a cross-sectional view of equal cross-section. Therefore, equal cross-section irregular stone is a symmetrical irregular stone.
2) Non equal section irregular shaped products: Refers to the situation where, regardless of the shape of the main body and its cross-sectional shape, the cross-sectional views obtained by cutting along the vertical plane of the column axis are not completely identical. Therefore, non equal section irregular shaped stone is an asymmetric irregular shaped stone, mainly due to the complex structure of this type of stone product.
3) In addition, there are other classification methods.