Agate is extremely difficult to process in ancient times due to its hard texture. The ancient folk method is to make the agate stone slowly beat into a round shape and then manually grind it. The surface will have traces of tapping. The hole of the bead is slowly ground. The wall is not smooth, there are vertical or horizontal protrusions, the aperture is also inconsistent, the official agate beads are completely ground, the appearance is smooth, the texture is excellent, but the opening method is the same as above, and the characteristics and shape of the hole can be judged from the new Old beads.
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