Identification Method Of Natural Stone

First view: observe the surface structure of natural stone with naked eyes. Generally speaking, natural stone with uniform fine structure has fine texture and is the best natural stone; The stone with coarse and unequal grain structure has poor appearance effect, uneven mechanical properties and poor quality. In addition, due to the influence of geological process, natural stone often produces some small cracks in it, and natural stone is most likely to crack along these parts, which should be removed. As for the lack of edges and corners, it is more important to pay attention when selecting.
Second try: use a simple test method to check the quality of natural stone. Generally, a small particle of ink is dropped on the back of the natural stone. If the ink is quickly dispersed and leached, it indicates that the internal particles of the natural stone are loose or there are gaps, and the quality of the stone is poor; On the contrary, if the ink drips in place, it means that the stone is of good density and texture (this is very similar to the ceramic tile).
Third listen: listen to the knocking sound of natural stone. Generally speaking, natural stone with good quality has a clear and pleasant knocking sound; On the contrary, if there are micro-cracks in the natural stone or the contact between particles becomes loose due to weathering, the knocking sound will be hoarse.