Bluestone is the best, granite is the second best, and marble is the worst. The good ones are all made of bluestone. Only the tables placed on the roadside are made of marble.

Marble is made of loose material. In terms of building materials, the country has regulations that marble is allowed to be repaired. It is conceivable that tables made of marble are What will happen.

Granite is slightly better than marble. Bluestone has good density and good flatness after the material is evenly polished. You will understand it when you go to the stone factory or store to see it