Believed by the ancients to be a stone, the Pearl is instead a shell-like concretion, usually rounded and having a brilliant luster with varying tints. It is found in the shell of the pearl oyster. Mohs 2.5 - 4.5.
Pearl brings purity and innocence.
It also gives clarity to both physical and mental sight. Its beauty depends much on the health of its wearer. Pearl absorbs negative energy from the wearer and returns it. It is a good stone to wear during self-confrontation. Sea-grown Pearls are more powerful and cultured ones.