Pearl | |
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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.
Recife | |
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Population | 1599514 |
Recife (Brazilian Portuguese: [ʁeˈsifi] (listen)) is the fifth-largest urban area in Brazil with 4,054,866 inhabitants, the largest urban area of the North/Northeast Regions, and the capital and largest city of the state of Pernambuco in the northeast corner of South America. The population of the city proper was 1,625,583 in 2016. The first slave port in the Americas, Recife was founded in 1537, during the early Portuguese colonization of Brazil, as the main harbor of the Captaincy of Pernambuco, known for its large scale production of sugar cane. It was the former capital Mauritsstad of the 17th century colony of New Holland of Dutch Brazil, established by the Dutch West India Company. The city is located at the confluence of the Beberibe and Capibaribe rivers before they flow into the South Atlantic Ocean. It is a major port on the Atlantic. Its name is an allusion to the stone reefs that are present by the city's shores. The many rivers, small islands and over 50 bridges found in Recife city centre characterise its geography and led to the city being called the "Brazilian Venice". As of 2010, it is the capital city with the highest HDI in Northeast Brazil and second highest HDI in the entire North and Northeast Brazil (second only to Palmas).The Metropolitan Region of Recife is the main industrial zone of the State of Pernambuco; major products are those derived from cane (sugar and ethanol), motor vehicles, ships, oil platforms, electronics, software, and others. With fiscal incentives by the government, many industrial companies were started in the 1970s and 1980s. Recife has a tradition of being the most important commercial hub of the North/Northeastern region of Brazil, with more than 52,500 business enterprises in Recife plus 32,500 in the Metro Area, totaling more than 85,000.