Seashells have the natural ability to disperse negative energy. Due to their home being the Ocean which is concentrated in sea salt. 

Shells can harness and enhance Reiki healing with their size, shape and structure
Seashells have healing energy which works with the healer to cleanse, balance and harmonise chakras and the aura.

Shell stimulates intuition, sensitivity, imagination and adaptability. 

It helps to enhance mental clarity and provides insight into decision-making. 

Shell promotes cooperation between the self and others, as well as within the self.
Shell treats hearing disorders and calcium deficiencies. 

It assists the healing of broken bones and general dysfunctions of the spinal canal and the nervous system. .
Shell enhances the assimilation of vitamins A and D.