
Akoya
pearls are produced from the oyster known as Pinctada
fucata martensii, which is the smallest pearl
producer known in the oyster family. These pearls
are known for their pristine round shapes, which
make them an ideal and popular choice for necklaces
and matching earrings. However, aside from being
consistently round, they can also have a semi-round,
baroque and semi-baroqe shape.
Although Akoya pearls are also
produced in China, they previously were considered the Japanese
pearl, and were cultured primarily in Ehime, Mie,
Oita, Nagasaki and Kumamoto prefectures.
The water temperature of the
ocean where they grow is considerably low, and
fluctuates with the coming of each new season.
Akoya pearls develop a unique luster and color,
which is caused by the compacting of the aragonite
crystals which form in the water during seasonal
change. The ideal Akoya pearl is one that has
the perfect amount of crystals as well as nacre,
and is considered to be the most lustrous and
beautiful of all pearls.
To produce Akoya pearls, a nucleus
is inserted with a mini speck of mantle tissue
form previous oyster shells, creating a round
bead that the nacre will begin to grow around.
Depending on the size of the oyster, usually up
to three beads can be placed in it. Once the beads
are ready, the oyster is placed in the ocean and
left for 6-18 months for cultivation. The longer
the Akoya oysters are left in the ocean, the better
chance the nacre has of growing and influencing
the pearl, resulting in nicer looking and more
valued pearls. Unfortunately, the longer period
of time also means a higher risk is involved,
as the oyster has more potential of dying or becoming
damaged from storms and other ailments. The highest quality
Akoya pearls are left in the ocean for close to two years.
The average size of Akoya pearls
range from as tiny as 2 mm to 9.5 mm. All sizes
of these pearls can be used for jewelry purposes,
but it is commonly the 5 -8 mm sized pearls that
are used when making necklaces. Due to the different
size range of the Akoya pearl, it is one of the
most popular pearl choices among woman.
Akoya pearls come in a variety
of colors, such as blue, green, pink, rose, cream,
white, silver and gold. The characteristic hues
are attributed to the nacre structure of the pearl,
and for this reason, cultivators focus on producing
pearls that are made with the right quantities
of each ingredient. When it comes down to quality,
the thicker the nacre of the Akoya pearl is, the
more valuable and beautiful the pearl will be.
Even though the Akoya pearl
has been challenged by the look and luster of
freshwater pearls, it still maintains its popularity
today. This is because not only can it suit the
taste and style of any occasion, as they can be
worn elegant, chic or casual, but they are a taste
of the true beauty that thrives and blossoms beneath
the sea.