You can't. Jewelry glue can't be used to repair olive core, because it will burn if it is stuck with glue for a long time, which is caused by glue oxidation. Olive nucleus is the nucleus of olive, an olive plant. This plant is shaped like "olive" strips. The stone is spindle-shaped, with blunt tips at both ends, reddish brown and six ridges on it. It is hard but not fragile.