The Akoya pearls are almost perfectly round and have a beautiful radiant glow. They are found in Japan, and it was Akoya pearls that were used for the first cultivation of artificial pearls of round shape.
The term Akoya pearls was adopted in the industry to denote pearls now grown in China, South Korea, Vietnam and Australia. Originally the term Akoya was only used for pearls grown in Japan.
Akoya, whether Japanese, Chinese or Australian, have the same properties. These shells artificially produce smaller pearls than other marine shellfish. In warmer months, the deposition of pearls is faster, in colder months, especially in Japan, mollusc metabolism is slower and deposition slows significantly.
Size: 2 - 11 mm, most often 6 - 8 mm
Shape: perfectly round - cultivation of Akoya pearls is a round bead method. Other shapes such as drops or oval are quite uncommon.
Colour: most commonly white, with a slight pink or silver hue. Naturally occurring Akoya pearls are white, silver, blue, yellow and cream, with shades of pink, silver and green.
Gloss: gloss is the most important assessment factor for how to sort Akoya pearls. It is influenced by the degree of light penetration on the surface - the most valued are those on which the light is reflected like a mirror.
Akoya pearls are highly prized for their beautiful mirror gloss and perfectly round shape.