Pearl vs Donetsk

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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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Donetsk (UK: don-YETSK, US: də-N(Y)ETSK; Ukrainian: Донецьк [doˈnɛtsʲk] (listen); Russian: Донецк [dɐˈnʲetsk]), formerly known as Aleksandrovka, Hughesovka, Yuzovka, Stalin and Stalino (see also: cities' alternative names), is an industrial city in eastern Ukraine located on the Kalmius River in the disputed Donetsk region. While internationally recognized as in Ukraine, the city is under the de facto administration of the unrecognized Donetsk People's Republic, which claims it as its capital city. The population was estimated at 929,063 (2016 est.) in the city core, with over 2,000,000 in the metropolitan area (2011). According to the 2001 Ukrainian Census, Donetsk was the fifth-largest city in Ukraine.Administratively, Donetsk has been the centre of Donetsk Oblast, while historically, it is the unofficial capital and largest city of the larger economic and cultural Donets Basin (Donbass) region. Donetsk is adjacent to another major city, Makiivka, and along with other surrounding cities forms a major urban sprawl and conurbation in the region. Donetsk has been a major economic, industrial and scientific centre of Ukraine with a high concentration of heavy industries and a skilled workforce. The density of heavy industries (predominantly steel production, chemical industry, and coal mining) determined the city's challenging ecological situation. In 2012 a UN report ranked Donetsk among the world's fastest depopulating cities.The original settlement in the south of the European part of the Russian Empire was first mentioned as Aleksandrovka in 1779, during the reign of the Empress Catherine the Great.

In 1869 the Welsh businessman John Hughes founded a steel plant and several coal mines in the region, and the town was named Hughesovka or Yuzovka (Юзовка) in recognition of his role ("Yuz" being a Russian-language approximation of Hughes). During Soviet times, the city's steel industry expanded. In 1924 Yuzovka was renamed Stalin. In 1929 Stalin was renamed Stalino, and in 1932 the city became the centre of the Donetsk region. Renamed Donetsk in 1961, the city today remains a centre for coal mining and for the steel industry. Since April 2014 Donetsk and its surrounding areas have been one of the major sites of fighting in the ongoing Donbass War, as pro-Russian separatist forces battle against Ukrainian military forces for control of the city and surrounding areas. Throughout the war, the city of Donetsk has been administered by the pro-Russian separatist forces as the center of the Donetsk People's Republic (DPR), with outlying territories of the Donetsk region divided between the two sides. Donetsk International Airport became the epicenter of the war with almost a year-long battle leading to massive casualties among civilians and a total ruination of the northwestern neighborhoods of the city. As of July 2020, the DPR has full control of the city, with Ukrainian and DPR forces still engaging in combat outside of the city.

Source: Wikipedia