As a type of agate, the hardness of the south red is low, and it is very common for the south red to have cracks. Nanhong was formed during the movement of the earth's crust hundreds of millions of years ago, and during the formation process, the pressure of the earth's crust and the high temperature will cause cracks or some impurities in Nanhong.
Cracks formed naturally are unavoidable, and merchants often use them to make small objects or beads, etc., and you can also find a carver to carve and turn decay into magic. Of course, there will also be unscrupulous merchants who will optimize methods such as Nanhong glue injection with cracks, and the cracks will gradually appear after wearing them for a long time.
Secondly, improper maintenance caused by the internal crack of Nanhong is also common, in the high temperature or the environment with a large gap between cold and heat, bumps have been dried will lead to cracks in Nanhong, and even internal cracks in serious cases. Some small cracks on the outside can be alleviated by grinding or oil maintenance, but internal cracks or large cracks cannot be repaired.
The unworn southern red should be placed in a dark place that cannot be exposed to direct sunlight, avoid high temperature and dry environment, and those who have conditions can be placed in a sealed box for sealed storage. Before storing, you can clean and maintain the surface with clean water, wash off the oil, sweat and dust on the surface, wipe it dry, and apply maintenance oil to the surface.
It is worth noting that the maintenance oil should choose natural colorless oil, and the ancient and true white tea oil is a natural colorless and odorless vegetable oil, which is easier to maintain the original color of Nanhong than the colored oil that can be dyed, and has a good maintenance effect.