Black stone, solemn, dignified and solemn. However, black stone tends to turn white after grinding, and it is not easy to shine. So, why does black stone turn white? Next, let's take a look with the editor of FABULOUS Group.

　　1. Black stone is easy to pollute

　　Maybe some people think that black stone should have a strong ability to hide pollution, right? This understanding is wrong. Black is a color with strong contrast. Dust, stains, and pollution can easily show up on black stone, causing the visual effect to be gray and whitish.

　　2. The relationship between stone "color" and "ze"

　　The color of the stone comes from the natural color of the minerals contained in it. Therefore, the blackness of stone mainly depends on revealing the true color of its own minerals. So how to do it?

　　We all have this experience: pour water on the stone, the color of the stone becomes moist and transparent. This is because the water fills up the unevenness of the stone surface in this process, revealing the natural color of the mineral. This process actually optimizes the surface of the stone.

　　is white when grinding 50# and gray when grinding 300#. After grinding 3000#, when the gloss reaches 65 degrees or more, the natural color of the stone becomes clearer and clearer. Therefore, the higher the gloss, the more vivid the color of the stone.

　　3, insufficient grinding optimization

　　The primary reason for the whitish black stone, three words: not polished well. It should be pointed out that it is forbidden to skip the number when grinding black stone. If the number is skipped, there will be a situation of "cannot hold the number", which means that the next level of grinding disc cannot suppress the scratches left by the previous level of grinding disc, and it will inevitably turn white.

　　4, black stone cannot cover the scratches

　　In fact, no matter what kind of stone, the scratches are all white. Recall that in daily life, from scratches on the protective film of mobile phones to scratches on cars of various colors, all of them are white. This phenomenon is determined by optical principles and has nothing to do with material and color.

　　Therefore, the ability of black stone to hide scratches is the lowest. Grinding scratches, scratches caused by coarse particles of grinding tablets, and scratches caused by sand on the soles of the shoes can easily make the black stone gray and whitish.