How to identify inferior marble and granite slabs

1) The tone of the pattern on the surface is not beautiful

The surface of high-quality stone is beautiful and elegant in color and grace, which makes the decorative surface have a strong decorative effect. The quality of the surface of the stone after processing is not beautiful, which can not give people a beautiful enjoyment. Therefore, the tone of the stone surface pattern is the main indicator for evaluating the quality of the stone.

2) The appearance quality of processed boards is poor

During the processing of stone, some defects will be left on the surface appearance. If these appearance defects are beyond the scope stipulated by national standards, the stone is regarded as unqualified. The decorative effect of these inferior stones with poor appearance quality will have a poor overall effect, so in determining the quality of the stone, in addition to considering the color of the pattern, the appearance quality must also be checked.

3) The deviation of the size is large

Decorative stones are processed into slabs for use, and the method of paving or collage is used during construction. If the boards with large deviations in specifications and sizes are pasted, the surface will be uneven and the joints will be uneven. Especially for facade decoration, the line shape of the decorative surface will be uneven, affecting the overall decorative effect. Therefore, the deviation of the size will directly affect the decorative effect of the stone.

4) Poor physical and chemical performance indicators

Inferior stone materials have poor compressive strength, flexural strength, abrasion resistance, durability, hardness and other properties, and cannot guarantee the durability of the stone.