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What are common quality issues with calacatta quartz stone?

13-09-2023

Common quality issues with quartz stone are as follows:


  • chromatic aberration

Quartz stone has a low resin content, with over 90% being quartz. Quartz is extracted from natural mines, meaning that over 90% of its components come from nature. Although the color of quartz in most mines is white, there are also differences, some are yellow, some are blue, and sometimes there are slight differences in the color of quartz from the top and end of the same mine.

According to this situation, there may be slight color difference in the quartz stone board. After factory inspection, the color of the board with the same product batch number is basically the same (although it is lower than the standard for ordinary artificial stones, making it difficult to achieve seamless splicing), and the board with different product batches may have slight color difference. During processing, plates of the same batch number must be used for connection, and plates of different batch numbers are not allowed to be connected.

If there is a significant color difference after connecting plates of the same batch number (slight color difference is a normal phenomenon), please confirm on site whether the polishing degree of the plates is consistent. The polishing degree of dark colored plates will directly affect the color difference. Next, wipe with a damp cloth and confirm under natural light. It is best to observe from the same angle.


  • impurity

Due to the fact that over 90% of the components of quartz stone plates come from natural sources, quartz mines may have yellow skin, making it difficult to control impurities in quartz sand compared to ordinary artificial stone raw materials. In addition, the hardness of quartz stone boards is high, and the repair process is also difficult compared to ordinary artificial stone boards.

Generally speaking, there will be 1mm impurities on the surface of quartz stone plates, which is a normal phenomenon.


  • cracking

Quartz stone is a product formed by vacuum high-pressure molding, with low resin content, high hardness, and lower toughness compared to ordinary artificial stones. Although the quartz stone countertop contains composite agents that improve material toughness and has relatively high impact resistance, it is still necessary to avoid heavy hitting, frequent knocking on the countertop, or using gravity to compress the suspended parts of the countertop, especially the weak parts on the countertop, such as near the stove, water basin, corners, etc Splicing parts, middle parts of large-span cabinets, etc. Generally speaking, all corners of the countertop design should maintain a rounded corner of R25mm or more; Apply gongs on the four sides of the stove and basin mouth, with straight edges; The front skirt and rear underwater bumper should be firmly bonded; It is prohibited to connect at the opening position or corner; Cabinet installation should be horizontal; The maximum span of the table support should not exceed 600mm.


  • Connecting seam

Quartz stone has high hardness and low resin content, making it closer to natural stone than ordinary artificial stone. After the quartz stone is connected, there are usually traces like threads at the joint, but it is not easy to see without careful inspection, and it does not affect the aesthetics. Generally speaking, quartz stone products can be seamlessly spliced with the help of skilled quartz stone processors.


Foshan Rongguan Glass Material was found in 1986 , is one of the largest building material enterprises in  China, which mainly produces high quality quartz stone,  fashion alacatta quartz slab,artificial marble and clay roof tile , sintered stone , terrazzo stone without the above question . If any need , pls feel free to contact us 

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