The original stone is black, colored limestone, thin strip with alternating layers of white, gray stripe dolomite rock, black and white alternate with, commonly known as "dao" black and white.
原石是黑色、灰黑色薄层条带灰岩，与白色、灰白色条带白云岩形成互层的岩石，黑白相间，俗称“黑白道”。
The original stone is black, colored limestone, thin strip with alternating layers of white, gray stripe dolomite rock, black and white alternate with, commonly known as "dao" black and white.
原石是黑色、灰黑色薄层条带灰岩，与白色、灰白色条带白云岩形成互层的岩石，黑白相间，俗称“黑白道”。
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