Because nacre is an organic matter, this exposed to modifications, mainly in case of drying.
It I could produce a "aging" of pearl and thus limit its life. First they become kills,
soon they appear cracks, and finally they begin to lose leaves (layers).

It is impossible to guarantee the life of pearl by a certain time. The statistics consider
of 100 to 150 years of duration like average. Nevertheless, exist pearls
that have several centuries of antiquity and still conserve all his intact beauty.

Doubt that does not fit good ones taken care of contribute to the conservation
of per them. A dryness and a humidity very elevated are both detrimental ones.
Pearls also are sensible to acids, the sweat, the cosmetics, alcohol, perfumes,
and the lacquer. The regular control and cares can extend the life of pearl.

1.
Cultured Pearls are relatively soft in comparison to other precious stones and metals.
So that it is important to maintain per them isolated of the rest of jewels thus to assure that beautiful brilliants and with the passage of time are still preserved.

2.
The cases with interiors of silk, cotton or velvet are adapted for their conservation, because they deal with smoothness per it besides to allow the sweating.

3.
Cosmetics, perfume and hair spray all contain chemicals that can dull the lustre of a pearl. The natural acids contained in body oils and perspiration can damage pearls in the same way.
It is best to put your pearls on after applying makeup, perfume and hair spray.
Wiping the pearls with a soft damp cloth after you wear them will ensure that they remain free from harmful build-ups of these compounds.
Periodically, pearls should be washed with a mild soap.