Pearl gemstones are formed
inside the shell of certain mollusk due to constant deposition of calcium
carbonate on the concentric layers of shells. A natural pearl gemstone is
perfectly rounded and smooth. But nowadays it is very rare to spot a natural
pearl stone.
The original pearl stone are
quite expensive and not accessible for a common man. However, in order to
fulfill the requirement of pearl stone. Nowadays, with the help of advance
technologies, imitation of the pearl stone is created. These stones are called
cultural pearl stone. They are not being developed naturally and human
intervention is must in order to produce these gemstones.
Also Read Interesting Facts About Pearl Stone