From a technical perspective, the fused silica-modulated light field for rectangular scratch defects is the strongest, and the damage threshold decreases with increasing scratch depth. This means that for black quartz countertops, rectangular scratches may have a greater impact on their durability. In addition, if there are cross scratches on the surface of the material, changes in the cross angle of the scratches will affect the damage characteristics of the material. This suggests that the shape and location of scratches are also important considerations when evaluating the scratch resistance of black quartz countertops.

However, it should be noted that the above-mentioned research mainly focuses on the damage characteristics of fused quartz materials under specific conditions, and does not directly mention factors such as the specific application environment and frequency of use of black quartz countertops. Therefore, although you can learn some basic information about the reaction of quartz material when it is scratched, this information does not fully represent the durability and scratch resistance of black quartz countertops in actual use.