The pros and cons of stone material depends on the quality of raw materials and processing technology. The stone surface of high quality, does not contain too much noise, uniform cloth color, no obvious light and shade turning situation, and the quality of stone after processing will have a lot of irreparable "defects", so say, stone surface pattern tone is an important index of stone quality evaluation. If the processing technology and process is not up to standard, the processed finished products will appear warping, depression, color spots, stains, lack of edge off Angle, cracks, color lines, pits and other phenomena, such as stone are "defective".

Under normal circumstances, good stone should have such characteristics: smooth surface, no rough feeling when touching by hand; The front is bright, and the reflective effect is consistent when observing the light, without flickering and dimming phenomenon; The cutting edge is flat, and when observed from the side, the cutting edge presents a straight line without any jagged concave points. Uniform color, no color difference on the surface of each stone; The texture is clear, the texture of the same kind of stone is consistent, there is no obvious difference.

When buying, you can listen to the percussion sound of stone, stone with good general quality its percussion is clear and melodious, if there is a slight crack inside the stone or because of weathering, the contact between particles becomes loose, the percussion is rough and hoarse, which also shows that the quality of stone is not good. And the dimension specification of stone material of quantity also should be bought when, lest affect join together, or cause the design after join together, decorative pattern, line to be out of shape, affect adornment effect.