Akoya pearls are a type of cultured pearl primarily produced in Japan and China. They are known for their round shape, high luster, and a wide range of colors, including white, cream, and pink. These pearls are formed inside the Pinctada fucata oyster and are typically smaller than other types of pearls, usually ranging from 2mm to 10mm in diameter. The cultivation of Akoya pearls began in the early 20th century and has since become a significant industry. They are often used in jewelry, such as necklaces and earrings, and are prized for their classic beauty and elegance. Their quality is determined by factors like luster, surface quality, and shape.