Pearl vs Kouvola

Informations

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

Informations

Kouvola (Finnish pronunciation: [ˈkou̯ʋolɑ]) is a city and municipality in southeastern Finland. It is located on the Kymijoki River in the region of Kymenlaakso and 134 kilometres (83 mi) northeast of the capital, Helsinki. With Kotka, Kouvola is one of the capital centers and is the largest city in the Kymenlaakso region. The city has a population of 81,778 (31 July 2020) and covers an area of 2,883.30 square kilometres (1,113.

25 sq mi) of which 325.06 km2 (125.51 sq mi) is water. The population density is 31.97 inhabitants per square kilometre (82.8/sq mi). Kouvola is bordered by the municipalities of Hamina, Heinola, Iitti, Kotka, Lapinjärvi, Loviisa, Luumäki, Miehikkälä, Mäntyharju, Pyhtää and Savitaipale. Kouvola has been often deemed “the most useless” or “the ugliest” city in Finland.

Source: Wikipedia