How to detect whether the stone is good or bad?

1. Quantity

Measure the size and specifications of the stone. When choosing a stone, you must know what specification you want to buy, and measure the size when purchasing so as not to affect the parallel connection, or cause unreasonable distribution of patterns, patterns, lines, etc. after the parallel connection. affect the final effect.

2. View

Observing the surface structure of the stone with the naked eye, in general, the fine material structure of the better stone is very uniform, it looks fine texture, and the mechanical skills are very uniform and the quality is good. Coarse-grained and unequal-grained stones have poor appearance, uneven mechanical properties, and slightly poor quality. In addition, due to the influence of geological action, natural stone often produces some fine pulsations, micro-cracks, etc. The stone is most likely to crack along these parts and should be removed. As for those lacking edges and corners, it is even worse! Care should be taken when choosing.

3. Listen

Listening to the percussion sound of the stone, when purchasing the stone, you should tap it gently with your hands. Generally speaking, the sound of the stone with fine internal structure and no microscopic cracks is clear and pleasant. On the contrary, if there are microscopic cracks or thin veins inside the stone or the contact between particles becomes loose due to weathering, the percussion sound is hoarse.

Fourth, try

Use a simple test method to test the quality of the stone. The most useful way to test a stone is to put a small drop of ink on the back of the stone. If the ink quickly disperses and leaches out, it means that the internal particles of the stone are loose or there are microscopic cracks, and the quality of the stone is not good; on the contrary, if the ink droplets do not move in place, it means that the stone is dense and has a good texture.