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 Black Pearl (play) The Black Pearl (play) The Black Pearl () is a three-act comedy by the 19th-century French playwright Victorien Sardou that was first performed in 1862 in Paris. The play is based upon a story written by Sardou and first published in December 1861 under the title The Medallion. In 1825, in Amsterdam, Messieurs Balthazar and Cornelius sit down to supper during a particularly strong thunderstorm. Balthazar informs Cornelius that he is aware that Cornelius is in love with Christiane, who had been raised by Balthazar’s mother, and is practically his sister. He gives his blessing to a marriage between Cornelius