Pearl Nacre Nacre, also known as mother-of-pearl, is a crystalline substance that creates the iridescent visual effect attributed to pearls. Nacre is an organic substance secreted by mollusks over an intruding irritant or implanted nucleus. It is a strong and resilient material that is lightweight and transparent, allowing light to pass through its surface, creating a subtle glow on the pearl's surface. Metaphysical: Mother of Pearl gets its name from the fact that it is the iridescent lining of shell, where pearls can grow. Mother of Pearl has both traditional and New Age metaphysical and healing lore. It is said to attract prosperity. It is used in mystical work and lore to heighten intuition, psychic sensitivity, and imagination. It is purported to protect from negative influence, and transmute negative energy. It is said to be highly protective and a particularly potent stone of protection for children. A traditional lore use of Mother of Pearl is to purify environments. Mother of Pearl is also used in metaphysics to access primordial and racial memories. Crystal healing and folklore say that Mother of Pearl is helpful for high blood pressure, dizziness, improving vision, cataracts, and wound healing. Nacre Is The Beauty Of A Pearl The exact shape and size of the aragonite platelets are ultimately what influences a pearl's two most important quality attributes: luster and orient. Upon coming into contact with the surface of the pearl, a significant percentage of white light is able to penetrate the top layer and work its way through the nacre strata. Each platelet that the light comes into contact with acts as a tiny prism, breaking up the beam and refracting back a subtle rainbow of color that is visible on the surface of the pearl.