Cultured pearl Cultured pearl A cultured pearl is a pearl created by an oyster farmer under controlled conditions. Cultured pearls can be farmed using two very different groups of bivalve mollusk: the freshwater river mussels, and the saltwater pearl oysters. A pearl is formed when the mantle tissue is injured by a parasite, an attack of a fish or another event that damages the external fragile rim of the shell of a mollusk shell bivalve or gastropod. In response, the mantle tissue of the mollusk secretes nacre into the pearl sac, a cyst that forms during the healing process. Chemically speaking, this
Pearl barley Pearl barley Pearl barley, or pearled barley, is barley that has been processed to remove its hull and bran. All barley must have its fibrous outer hull removed before it can be eaten; pearl barley is then polished to remove the bran layer. It is the most common form of barley for human consumption because it cooks faster and is less chewy than other, less-processed forms of the grain such as "hulled barley" (or "barley groats", also known as "pot barley" and "Scotch barley". Fine barley flour is prepared from milled pearl barley. Pearl barley is similar to wheat in