Rock joints are widely distributed in rock masses, and their mechanical behaviours largely determine the strength and stability of the rock mass. The shear slip and failure along weak joints can lead to the instability of the rock mass and even induce landslides, tunnel collapses, rockbursts or other geological disasters. Thus, the study on the shear behaviours of rock joints and their influence on rockbursts is very important for the prevention of rockbursts and the safe construction of tunnels. In this paper, three types of rock joints (plaster mortar joints, marble joints and granite joints) containing the same surface are reproduced applying the 3D printing and 3D carving techniques. Shear tests of three different rock joints are performed under different normal stress levels. The shear behaviours and acoustic emission (AE) characteristics of different rock joints and their influence on fault slip rockbursts are addressed. The results indicate that the sudden stick slip and violent stress drops of granite joints could release enormous amounts of energy, which is more likely to induce a fault slip rockburst. The stress drop values after the peak increase with increasing applied normal stresses, resulting in an increase in the possibility of fault slip rockbursts. Dynamic shear failure dominates in granite joints, and the corresponding AE energy rate generated during shearing is also higher than that of the other two joints, indicating that more energy is released and that fault slip rockbursts occur easily.