Pearl with a mother of pearl bead center. In the cultured pearl industry, the resources used to create a mistaken all nacre baroque pearl is a drain on the production of round cultured pearls. Therefore, they are trying to improve culturing technique so that keshi pearls do not occur. All nacre pearls may one day be limited to natural found pearls. Today many "keshi" pearls are actually intentional, with post-harvest shells returned to the water to regenerate a pearl in the existing pearl sac. Tahitian pearls, frequently referred to as black pearls, are highly valued because of their rarity; the culturing
The Pearl (novel) develops throughout the novel. He begins as a hard-working, simple man that has a wife, Juana, and a son, Coyotito. He is content with his life-style as a diver but is not wealthy until he discovers the pearl. After discovering the pearl, Kino gradually changes to become a completely different man. Though his family is still the center of his actions, he is also driven by greed. Quickly, he becomes obsessed with the material things that the pearl could bring, which is drastically different than before. He is no longer content with his son being uneducated, or his family not