Cultured pearl is calcium carbonate and a fibrous protein called conchiolin. As the nacre builds up in layers of minute aragonite tablets, it fills the growing pearl sac and eventually forms a pearl. Natural pearls are formed by nature, more or less by chance. On the other hand, cultured pearls are human creations formed by inserting a tissue graft from a donor oyster, upon which a pearl sac forms, and the inner side precipitates calcium carbonate, in the form of nacre or "mother-of-pearl". The most popular and effective method for creating cultured pearls are made from the shells of freshwater river mussels
Parable of the Pearl but loss? Has your trust in yourself and your merits Come to naught before Christ and His cross? </poem> A less common interpretation of the parable is that the merchant represents Jesus, and the pearl represents the Christian Church. This interpretation would give the parable a similar theme to that of the Parable of the Lost Sheep, the Lost Coin, and the Prodigal Son. The phrase "Pearl of Great Price" has also been interpreted more widely to apply to things of great value in a number of religious contexts. For example, it is the title of a selection of Mormon