How to identify marble quality?

How to identify the quality of the marble is good or bad? Reporters to help ask: good and bad quality marble in the building materials market. If you buy a low-quality marble, is not only a waste of money, but it will also affect their health. Then processed finished veneer marble, its quality, how to identify it? May wish to have the following small coup:

See evenness. Good quality marble, its uniform grain structure and delicate texture; coarse and ranging from the grain structure of marble look poor, poor quality.

Drops of ink. Simple test methods to test the quality of the stone is good or bad.Usually a small grain of ink drops on the back of the stone, if the ink will soon disperse that leaching indicate loose or there is a gap within the stone particles, the poor quality of the stone; Conversely, if the ink droplets are standing still, then the stone texture.

Listen to the sound. Good quality marble, clear crisp percussion; stone internal fractures, veinlets, or the particles indirectly thixotropic pine weathering, the percussion sound gruff.