Question

How pearl formation takes place?

Answer 1

Natural Pearls form when an irritant - usually a parasite and not the proverbial grain of sand - works its way into an oyster, mussel, or clam. As a defense mechanism, a fluid is used to coat the irritant. Layer upon layer of this coating, called 'nacre', is deposited until a lustrous pearl is formed.

Hope this helps you.

Answer 2

$\sf{\underline{How\:Pearl\:formation\:takes\:place?}}$

$\bullet$ An oyster naturally forms the pearl when any external particle like sand gets entangled in its skin which causes irritation to it.

$\bullet$ The irritation stimulates the mantle to secrete thin concentric layers of nacre around this foreign particle.

$\bullet$ At the end of several years, a pearl is formed.


$\sf{\underline{What\:are\:pearls\:made\:of?}}$

Pearls are made up of calcium carbonate.


$\sf{\underline{Interesting\:fact:}}$

$\implies$ Kokichi Mikimoto of Toba (from Japan) is known to be the father of Pearl Industry.

$\implies$ Pearl formation is famous in only some molluscs.