Pearl vs Bolton

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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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Bolton ( (listen), locally ) is a large town in Greater Manchester in North West England, historically and traditionally a part of Lancashire. A former mill town, Bolton has been a production centre for textiles since Flemish weavers settled in the area in the 14th century, introducing a wool and cotton-weaving tradition. The urbanisation and development of the town largely coincided with the introduction of textile manufacture during the Industrial Revolution. Bolton was a 19th-century boomtown and, at its zenith in 1929, its 216 cotton mills and 26 bleaching and dyeing works made it one of the largest and most productive centres of cotton spinning in the world. The British cotton industry declined sharply after the First World War and, by the 1980s, cotton manufacture had virtually ceased in Bolton. Close to the West Pennine Moors, Bolton is 10 miles (16 km) north-west of Manchester. It is surrounded by several neighbouring towns and villages that together form the Metropolitan Borough of Bolton, of which Bolton is the administrative centre.

The town of Bolton has a population of 139,403, whilst the wider metropolitan borough has a population of 262,400. Bolton originated as a small settlement in the moorland known as Bolton le Moors. In the English Civil War, the town was a Parliamentarian outpost in a staunchly Royalist region and, as a result, was stormed by 3,000 Royalist troops led by Prince Rupert of the Rhine in 1644. In what became known as the Bolton Massacre, 1,600 residents were killed and 700 were taken prisoner. Bolton Wanderers football club play home games at the University of Bolton Stadium and the WBA World light-welterweight champion Amir Khan was born in the town. Cultural interests include the Octagon Theatre and the Bolton Museum and Art Gallery, as well as one of the earliest public libraries established after the Public Libraries Act 1850.

Source: Wikipedia