Method for processing seed crystal capable of showing characteristic structure and shape of quartz crystal

The invention provides a method for processing a seed crystal capable of showing a characteristic structure and shape of quartz crystal. The method comprises the following steps of: (1) scribing a line: milling the Z face of Z plate original crystal into a plane, controlling a milling angle to between 24 degrees 50 minutes and 25 degrees 50 minutes, and scribing a regular hexagon on the Z face along the direction vertical to the Y direction by taking the Y direction to be longer than the X direction and the Z face as the maximum face; (2) cutting: cutting along the line of the regular hexagon scribed at the step(1) and the direction vertical to the Z face to obtain a hexagonal prism; (3) milling all cutting faces: milling six side faces of the hexagonal prism obtained at the step(2), wherein the normal value of the milling angle is 10 degrees 26 minutes, and the angle tolerance is controlled within +/-30 minutes; and (4) cutting: by taking one of prism faces as a bonding face, cutting the milled hexagonal pri