A consideration on the size of the nucleated Akoya cultured pearl circulating in the market

Abstract

In recent years, nucleated acoya cultured pearls produced from Akoyagi have diversified beads size. Originally Akoya cultured pearls began in Mie Prefecture's ago-Bay during the Meiji era. It took advantage of the habit of trapping foreign bodies inside the body with the same components as shells. Initially it began with culturing true circle pearls of 3 to 5 mm. At the Japan Pearl Promotion Organization, the size of bead nucleated Akoya cultured pearls cultured in Japan is published as 2 to 11 mm. In recent years, Seawater and freshwater-produced cultured pearls circulating in the market are getting lost by size. Therefore, we considered the minimum and maximum size of the nucleated Akoya cultured pearls that are currently circulating and also about those production area.