Pinctada radiata is harvested for pearls, especially in Qatar AND BARHEIN waters. They can be white, creamy or silver with green to pink overtones. Pinctada radiata, commonly known as the Atlantic pearl oyster or the Gulf pearl oyster is a species of pearl oyster that distributed throughout the Indo-Pacific. Its range extends as far north as Japan and as far south as the Australian state of Victoria. P. Radiata shell is, thin, compressed, and square-like, with growth rings and ribs on the top surface. Its coloration varies, though it usually displays a brown or red exterior with a pearly interior and a light brown edge. More rarely, the shell may display a green or bronze exterior. Darker brown or red rays may mark the shell, creating darker areas at the margin. It attaches itself between 5 and 25 meters to various hard substrata, including rocks and wrecks. P. Radiata is common throughout its range, possibly because of its adaptation to subtropical environments and ability to survive in polluted water. Pinctada radiata is harvested for pearls, especially in Qatar and barhein waters.