Pearl vs Braga

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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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Braga ( BRAH-gə, Portuguese: [ˈbɾaɣɐ] (listen); Proto-Celtic: *Bracara) is a city and a municipality in the northwestern Portuguese district of Braga, in the historical and cultural Minho Province. The city has a resident population of 192,494 inhabitants (in 2011), representing the seventh largest municipality in Portugal (by population). Its area is 183.40 km2. Its agglomerated urban area extends from the Cávado River to the Este River. It is the third-largest urban centre in Portugal (after Lisbon and Porto). It is host to the oldest Portuguese archdiocese, the Archdiocese of Braga of the Catholic Church and it is the seat of the Primacy of the Spains.

Under the Roman Empire, then known as Bracara Augusta, the settlement was the capital of the province of Gallaecia. Inside of the city there is also a castle tower that can be visited. Nowadays, Braga is a major hub for inland Northern Portugal and it is an important stop on the Portuguese Way path of the Road of St James. The city was also the European Youth Capital in 2012.

Source: Wikipedia