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A pearl is a hard, glistening object produced within the soft tissue (specifically the mantle) of a living shelled mollusk or another animal, such as fossil conulariids. Just like the shell of a mollusk, a pearl is composed of calcium carbonate (mainly aragonite or a mixture of aragonite and calcite) in minute crystalline form, which has deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes, known as baroque pearls, can occur. The finest quality of natural pearls have been highly valued as gemstones and objects of beauty for many centuries. Because of this, pearl has become a metaphor for something rare, fine, admirable and valuable.
The most valuable pearls occur spontaneously in the wild, but are extremely rare. These wild pearls are referred to as natural pearls. Cultured or farmed pearls from pearl oysters and freshwater mussels make up the majority of those currently sold.
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Santo Domingo (Spanish pronunciation: [ˈsanto ðoˈmiŋɡo] meaning "Saint Dominic"), once known as Santo Domingo de Guzmán, is the capital and largest city of the Dominican Republic and the largest metropolitan area in the Caribbean by population. As of 2010, the city had a total population of 2,908,607, when including the metropolitan area. The city is coterminous with the boundaries of the Distrito Nacional ("D.N.", "National District"), itself bordered on three sides by Santo Domingo Province.
Founded by the Spanish in 1496, on the east bank of the Ozama River and then moved by Nicolás de Ovando in 1502 to the west bank of the river, the city is the oldest continuously inhabited European settlement in the Americas, and was the first seat of the Spanish colonial rule in the New World. Santo Domingo is the site of the first university, cathedral, castle, monastery, and fortress in the New World.