With the maturity of stone industry and decoration market in China, the limitations of this classification become more and more obvious. At present, decorative stones on the market are divided into granite, marble, slate and artificial stone.
There are also some well-known but few varieties in the market, which are classified as the same kind in the market. Mongolia black, for example, belongs to basalt, not granite. But the market share is large and the price is low. Everyone knows that it is basalt, but according to the current stone standards, it can only be classified as granite.
Slate, also called layered rock. Hard texture, with natural layered structure, can be split along the layer according to the required thickness. This kind of slate is stored in a large amount in our country and exported a lot, so the country lists it as a big category. In the unified number of natural stone published by 1999, natural decorative stone can be divided into three categories: granite, marble and slate. In recent years, with the popularity of imported travertine, this tuff is classified as marble according to the current stone standard. However, its physical properties are lower than the technical requirements of marble, and the inspection report is unqualified as soon as it comes out. This also makes the acceptance of the project more difficult.
The density and water absorption index of imported sandstone can not meet the technical standards of stone, and it has been widely used in practical projects due to market demand. In fact, according to the current standards, the acceptance of these projects is problematic. In order to pass the acceptance test smoothly, there are many tricks here. In fact, such a problem reflects that it is not only of great significance but also imminent for the country to issue this kind of stone standard.
Sandstone is also mined in China, but the amount is not large. Limestone is rarely mined in our country, so people classify it as marble in business.
Artificial stone, which everyone is familiar with, is commonly used in cabinets. This kind of artificial stone belongs to resin type. The earliest artificial stone was terrazzo. There are many kinds of artificial stones on the market now. Synthetic stone, acrylic artificial stone, resin plate artificial stone, non-resin artificial stone, Shi Ying artificial stone and microcrystalline stone are all artificial stones. As long as it is not natural, we call it artificial stone.