Pearl vs Bergamo

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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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Bergamo (, also UK: ; Italian: [ˈbɛrɡamo] (listen); Eastern Lombard: Bèrghem [ˈbɛrɡɛm] (listen); Latin: Bergŏmum) is a city in the alpine Lombardy region of northern Italy, approximately 40 km (25 mi) northeast of Milan, and approximately 30 km (19 mi) from Switzerland, the alpine lakes Como and Iseo, and 70 km (43 mi) from Garda and Maggiore. The Bergamo Alps (Alpi Orobie) begin immediately north of the city. With a population of approximately 122,000, Bergamo is the fourth-largest city in Lombardy. Bergamo is the seat of the Province of Bergamo. The metropolitan area of Bergamo extends beyond the administrative city limits, spanning over a densely urbanized area with slightly fewer than 500,000 inhabitants. The Bergamo metropolitan area is part of the broader Milan metropolitan area, home to more than eight million people.

The city of Bergamo is composed of an old walled core, known as Città Alta ("Upper Town"), nestled within a system of hills constituting a regional park, and the modern expansion in the plains below. The upper town is encircled by massive Venetian defensive systems that are a UNESCO World Heritage Site since 9 July 2017.Bergamo is well connected to several cities in Italy, thanks to the motorway A4 stretching on the axis between Turin, Milan, Verona, Venice, and Trieste. The city is served by Il Caravaggio International Airport, the third-busiest airport in Italy with 13.9 million passengers in 2019. Bergamo is the second most visited city in Lombardy after Milan.

Source: Wikipedia