The classification of Yuhua stone crafts can be divided from multiple angles, mainly including the following types:
Agate and chalcedony: This is the main type of Yuhua stone, crystal clear, with peculiar patterns. Its natural patterns present patterns of landscapes, figures, fish, insects, trees and flowers.
Opal: Opal Yuhua stone pays attention to the transition of colors, and the common series of blue, white and yellow are rare red, blue, purple, green and black. No matter what color, it cannot be dry, and the texture should be fine, complete and without cracks, and multiple colors coexist in one stone.
Jadeite rock: It is often opaque and monochrome, such as brown red, dark green, etc. It is often called "rough stone", but there are also those that have secondary impurities or fine veins that penetrate to form classical patterns and become treasures.
Flint: There are often nail marks on the surface, generally in brown, yellow and black monochrome. Those with beautiful patterns formed by black and white, black and yellow, and black and white stripes can become treasures.
Quartzite: mostly translucent monochrome white or monochrome yellow, with a hidden granular structure, often containing mica, pyroxene, chlorite, epidote and other impurities to form beautiful patterns.
Vein quartz, crystal: often monochrome white or colorless and transparent, because of the original impurities, inclusions, crystal defects, etc., forming fish, insects and flowers, it is a treasure.
Tectonic rock: generally presents the texture pattern of snow, sea waves and desert landscape.
Conglomerate: composed of gravel in conglomerate, forming dense python skin and fish scale-like natural texture.
Fossils: including fossils from different regions and geological ages, both simple fossils and fossils that have been transported and rounded to form Yuhua Stone.
Other rock: including granite, metamorphic rock, mudstone, etc., after a long period of physical and chemical action, forming round and smooth Yuhua Stone with peculiar color patterns.
In addition, Yuhua Stone can also be divided into levels such as top-quality stone, treasure stone, fine stone and excellent stone according to the degree of beauty, but these fine and top-quality stones are not easy to find or collect and require specific conditions.