Crystal stone
Crystal stone is indeed a kind of fine-grain Marble stones which is composed of gray and white crystals. The crystals of this kind of stone can be seen by eye. Crystal stone is usually composed of calcite and a small amount of wollastonite. In some types of these stones there is also quartz. The more the amount of quartz is, the stiffness of the crystal stone increased. If this stone is hit, it will emit a sound like hitting a porcelain. The color range of this type of stone limited and they are usually available in white.
Crystal stone is produced as a result of recrystallization of lime stones with dolomite and under the effect of internal factors such as pressure and temperature. Crystal stone has very high stiffness and in scientific perspective is a lime stone which has been recrystallized under the effect of pressure and heat due to injection of hot temperature. Crystal stone are those Marble stone which composed of white and gray crystals.