Pearl vs Managua

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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.

Imitation pearls are also widely sold in inexpensive jewelry, but the quality of their iridescence is usually very poor and is easily distinguished from that of genuine pearls. Pearls have been harvested and cultivated primarily for use in jewelry, but in the past were also used to adorn clothing. They have also been crushed and used in cosmetics, medicines and paint formulations. Whether wild or cultured, gem-quality pearls are almost always nacreous and iridescent, like the interior of the shell that produces them. However, almost all species of shelled mollusks are capable of producing pearls (technically "calcareous concretions") of lesser shine or less spherical shape. Although these may also be legitimately referred to as "pearls" by gemological labs and also under U.S. Federal Trade Commission rules, and are formed in the same way, most of them have no value except as curiosities.

Source: Wikipedia

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Managua (Spanish pronunciation: [maˈnaɣwa]) is the capital and largest city of Nicaragua, and the center of an eponymous department. Located on the southwestern shore of Lake Managua and inside the Managua Department, it has an estimated population of 1,052,217 in 2019 within the city's administrative limits and a population of 1,401,687 in the metropolitan area, which additionally includes the municipalities of Ciudad Sandino, El Crucero, Nindirí, Ticuantepe and Tipitapa.The city was declared the national capital in 1852.

Previously, the capital alternated between the cities of León and Granada. The 1972 Nicaragua earthquake and years of civil war in the 1980s severely disrupted and stunted Managua's growth. It was not until the mid-1990s that Managua began to see a resurgence.Managua's population is composed predominantly of mestizos and whites who are mainly of Spanish descent, with a minority being of French, Jewish Nicaraguan, German Nicaraguan, Italian, Russian, Greek and Turkish descent.

Source: Wikipedia