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Shape: The shape of a pearl depends
on many factors, including the biological forces on
the environment, which can affect the secretion of the
pearl sac, and the nature of mother-of-pearl itself.
One can find pearls in round, oval, drop, circled, button,
or baroque shapes. Perfectly round and symmetrical pearls
are rare and the most exceptional and representing at
maximum 5% of the harvest. This rarity makes them the
most valuable.
While round pearls are the most highly sought after
for rings and necklaces, the other shapes often inspire
designers to create unique jewelry.
Surface: Each pearl is unique,
and most bear the marks of their gestation, as tiny
streaks and stains or depressions. The best pearls are
nearly featureless, with a high degree of translucency.
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