Image: to find a pearl. The pearl is a feminine symbol. In Latin it is called margarita, as the name Margaret means pearl, and in alchemy it has generally been used to characterize the silver like feminine substance, in opposition to the golden male substance.
The image could be expressed in many ways. For example the second birth, which always expresses a deep transformation. This is very different from rebirth.
A traditional representation of a second birth, in myth and religious history, is baptism. From this process, when it functions as a ritual or initiation, the person emerges transformed. But anyone may have for example a dream with a pearl, which could be related to the yet distant possibility of a transformation ahead.