Natural decorative stone is made of natural stone, so its quality depends upon the grade of the block and on the other hand. Inferior Marble Decoration Home Pieces and granite slabs are primarily expressed in the following aspects:

(1) The pattern of the top is not beautiful

The surface of the high-quality stone includes a beautiful and elegant color, which makes the decorative surface have a solid decorative effect. Nevertheless, the grade of the rock after processing is not beautiful, and it could not provide people a lovely enjoyment. Therefore, the surface tone from the stone is the main indicator for analyzing the grade of the rock.

(2) The grade of the processed sheet is poor.

Stone will keep some defects on the surface appearance through the processing. If these appearance problems are beyond the scope of national specifications, stone is a non-conforming product. With these poor quality stone with poor appearance, the overall effect will be very poor. Therefore, in judging the quality of the rock, in addition to taking into consideration the color of the pattern, the appearance quality must also be checked.

(3) Huge deviations in proportions

The decorative stone is processed into a sheet, and is constructed with a tile or a collage method. If the dish with a big deviation from the standards size is certainly laid, the surface will end up being uneven and the seams will be uneven. Especially for the decor of the facade, the collection form of the ornamental surface will be irregular, which will affect the entire ornamental effect. As a result, the deviation of how big is the standards will directly affect the ornamental aftereffect of the stone.

(4) Poor physical and chemical performance indicators

The inferior stone has poor compressive strength, flexural strength, wear resistance, durability, hardness, etc., and cannot guarantee the durability from the stone.