Natural stone is generally divided into marble, granite and slate.

　　Marble is a kind of limestone metamorphic rock, which is bright in color and luster, and will show various cloud like patterns. The disadvantage is that the luster will fade after long-term exposure to the sun and rain, so it is only applicable to interior decoration.

　　Granite is formed with volcanic eruption, belonging to igneous rock, with coarse granular structure. It can maintain its luster for a long time when used outdoors. The exterior walls of most high-end buildings are decorated with granite.

　　Slate belongs to sedimentary rock, which does not need special processing after mining from the mountain, so it is cheap and can be used as roof tiles, ground and wall, but generally only for decoration rather than large area use.

　　The purchase of stone can be started from the following aspects:

　　1. Marble or granite shall be selected according to the application situation. For example, the outdoor ground can only use granite, while the living room ground is better with marble because of its gorgeous patterns, rich colors, and easy to match with various colors of furniture.

　　2. Choose the variety of stone according to the color of furniture and cloth, because each kind of marble or granite has its unique pattern and color.