This frozen tear is polished by the pulse of the waves into a timeless symbol of purity and light! Pearl is a hard, dense, variously colored lustrous concretion formed of concentric layers of mother-of-pearl as an abnormal growth within the shell of some mollusks and used as a gem. It is composed of calcium carbonate (mainly aragonite or a mixture of aragonite and calcite. The characteristic luster of pearls is due to reflection, refraction, and diffraction of light from the thin overlapping translucent layers. Pearl is believed to help balance emotions, reduce stress and anxiety. It is associated with purity and innocence and encourage honesty, wisdom and personal integrity.