Pearl and Mother Of Pearl are the creation of a living organism,
and environmental factors play a crucial role in their formation. Pearl producing mollusks cannot regulate their body temperature,
and are susceptible to changes in external conditions.
If the waters reach a high temperature of 30 degrees Celsius,
the mollusks metabolism is increased and
they grow faster secreting more nacre than a mollusk who lives
in colder waters. However, the layers of nacre are thick and
not translucent, and the crystal structure is not perfect
resulting in a duller less lustrous Pearl. Therefore Pearls are rarely harvested in the hotter summer months.
However, when temperatures go down to 16 degrees Celsius
the mollusks metabolism is low, and produces nacre at a slower
rate. These nacre layers are thinner and the crystal structure
more even resulting in a Pearl with increased translucency
and better luster.
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