Opalite crystal is primarily associated with the crown and third eye chakras. The crown chakra connection enhances self-insight, intuition and psychic abilities. The third eye chakra connection further strengthens self-understanding, in addition to clarifying perceptions of the external world.
Moonstone is a natural crystal mineral that is thought to harvest the energy of the moon, which embodies yin's passive and relaxing energy. Similarly, this stone promotes positive well-being and balance, and enhances your intuition. 
The aspects of ourselves that we associate with femininity are all believed to get activated and reinforced through the healing properties of moonstone crystal. These include intuition, passion, abundance, nurturing energy, and more.