The Grading of Akoya Pearl

By: Pattrickjohnson

Akoya pearl was largely harvested, for the first time in Japan , in a place called Ago bay in 1916. These pearls are quite different from any other indigenous pearls. These pearls were cultured and created by a method known as grafting. This culturing method creates pearls in such a way that a small bead was placed in the reproductive organ of the host oyster with a small tissue of donor mantle. Gradually, the pearls are formed inside the oyster due to the catalyst reaction of the pearl sac and the deposition of nacre.

These days Akoya pearls are famous for its distinguishing facts and are found at most of the jewelry shops around the world. Akoya Pearl bracelet has also become one of the women's favorite jewelry and has got a place in every woman's jewelry collection. Akoya pearls are perfectly round in shape and have high luster quality, which aids it in being perfect for making a pearl bracelet . Moreover, its distinguishing white body color makes it known worldwide.

Here are some distinguishing factors that make Akoya pearls famous in the world.

Size : Akoya pearls are relatively small in size with an average diameter of 7mm. Most size of the Akoya pearls falls in between 3mm to as large as 10 mm. larger sizes of Akoya pearls are more valuable than the smaller ones.

Shape : Due to the perfectly spherical bead planted into the reproductive organ of the host oyster and the gradual deposition of nacre makes most Akoya production, round in shape. This is one of the significant characters of Akoya pearl, as round shapes are considered more valuable.

Luster : Akoya pearls have a very sharp luster and their surface looks like a mirror. High luster is one of the important choices while buying a pearl. Hence, this high luster makes akoya more valuable and expensive.

Nacre thickness : The nacre thickness of akoya is comparatively good. But short culture akoya pearls have thin nacre as they have been harvested very early and do not have sufficient deposition of nacre into the pearl mother bead. Thus, these low quality Akoya pearls are cheap and doesn't have the metallic shine.

Surface : Cultured pearls do not need to be cut nor polished to show off their beauty as they are produced organically. They are very unique and exhibit different types of characteristics.

Origin : It was believed that akoya pearls produced in Japan have the finest quality and value. But these days, China , South Korea and Australia also produce Akoya pearl with thicker nacre.

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