How to judge the material of imitation marble paper?

How to judge the material of imitation marble paper? The specific method of judging the imitation marble paper is to drop a small ink on the back of the stone. If the ink quickly disperses and leaches out, it means that the particles inside the stone are loose or there are gaps, and the quality of the stone is not good; on the contrary, if the ink drops on the stone, there is no change. , then the stone quality is good. ​Listen to the sound: The marble of good quality, the percussion sound is crisp and pleasant. Appearance: The stone with uniform fine-grain structure has a delicate texture and is the best stone; the stone with coarse-grained and unequal-grained structure has poor appearance. Listening to the ears: The percussion sound of high-quality stone is crisp and pleasant; if there are slight cracks in the stone or the contact between particles becomes loose due to weathering, the percussion sound is hoarse. Dropping ink: Drop a small drop of ink on the back of the stone. If the ink quickly disperses and leaches out, it means that the particles inside the stone are loose or there are gaps, and the quality of the stone is not good; if the ink drops remain in place, it means that the texture of the stone is good.