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. Never mix Pearls with gemstones, particularly Diamonds. The mixture magnifies internal conflict. Generally, Pearls are good for meditation.