But, how the precious pearls are form after the mussel considers his action a simple protection against the irritation, It is one of the most appraised secrets of the nature. Since nacre is not only one tranquilizing substance.

It is compound of microscopic crystals, each one aligned perfectly with the other so that the light that goes through it's axis is reflected and refracted by other to produce a rainbow of light and color.

Cultivated pearls are form by mussels of almost identical way. The only difference is that the hand of the man surgically implants the irritating object - a small piece of polished shell - in the mussel, instead of leaving it as a random ocurrence of the nature, we help nature and the mussel to build it's miracle. +BACK