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
The Pearl (novel) the end, the finding of the great prize causes him to lose another, his son. Perseverance -The theme of perseverance is demonstrated by many characters, but mainly Kino. Before he found the pearl, he was a noble and a very determined person who sought fortune for his family. After he finds it, he is hoping to find it in a diffrent way. Because Kino believes that this would save his family, he persists “though many obstacles”that accompany the pearl. He perseveres to keep the pearl but, in the end, it was not worth keeping. Kino is the main character that