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Pinctada fucata, the Akoya pearl oyster (阿古屋貝), is a species of marine bivalve mollusk in the family Pteriidae, the pearl oysters. Some authorities classify this oyster as Pinctada fucata martensii (Gould, 1850). [1] It is native to shallow waters in the Indo-Pacific region and is used in the culture of pearls.
Pinctada is a genus of saltwater oysters, marine bivalve mollusks in the family Pteriidae. These pearl oysters have a strong inner shell layer composed of nacre, also known as "mother of pearl". Pearl oysters are not closely related to either the edible oysters of family Ostreidae or the freshwater pearl mussels of the families Unionidae and ...
The original Japanese cultured pearls, known as akoya pearls, are produced by a species of small pearl oyster, Pinctada fucata martensii, which is no bigger than 6 to 8 cm (2.4 to 3.1 in) in size, hence akoya pearls larger than 10 mm in diameter are extremely rare and highly priced. Today, a hybrid mollusk is used in both Japan and China in the ...
The cultured pearls on the market today can be divided into two categories. The first category covers the beaded cultured pearls, including Akoya, South Sea, Tahiti, and the large, modern freshwater pearl, the Edison pearl. These pearls are gonad-grown, and usually one pearl is grown at a time. This limits the number of pearls at a harvest period.
The Illinois state government has numerous departments, but the so-called code departments provide most of the state's services. [1] [2] ... Department of Public Health;
Japan Akoya pearl production generated large numbers of tiny keshi pearls, the value of which was mostly in the labor-intensive processing, so there is little or no incentive to cultivate extra keshi. Southsea pearls on the other hand are farmed in larger molluscs, and keshi from these may reach considerable size and value.
The A. Lincoln Motel sign at the Route 66 Experience at the Illinois State Fairgrounds. The sign will be featured on the Illinois float in the 135th Rose Parade in Pasadena, California, on New ...
"State sovereignty, national union" 5 ILCS 460/5 [notes 2] 1818 [6] Nickname "The Prairie State" Traditional [3] Pet: Shelter dogs and shelter cats: 5 ILCS 460/47 2017 [1] Pie: Pumpkin pie: 5 ILCS 460/100 2016 [1] Prairie grass: Big bluestem (Andropogon gerardii) 5 ILCS 460/55 1989 [3] Reptile: Painted turtle (Chrysemys picta) 5 ILCS 460/90 ...