Pearl vs Dijon

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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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Dijon (UK: , US: , French: [diʒɔ̃] (listen)) is in the prefecture of the Côte-d'Or department and Bourgogne-Franche-Comté region in Northeastern France. In 2017, the commune had a population of 156,920; the Greater Dijon area had 250,516 inhabitants in 2007. The earliest archaeological finds within the city limits of Dijon date to the Neolithic period. Dijon later became a Roman settlement named Divio, located on the road from Lyon to Paris. The province was home to the Dukes of Burgundy from the early 11th until the late 15th centuries, and Dijon was a place of tremendous wealth and power, one of the great European centres of art, learning, and science.The city has retained varied architectural styles from many of the main periods of the past millennium, including Capetian, Gothic, and Renaissance. Many still-inhabited town houses in the city's central district date from the 18th century and earlier. Dijon architecture is distinguished by, among other things, toits bourguignons (Burgundian polychrome roofs) made of tiles glazed in terracotta, green, yellow, and black and arranged in geometric patterns.

Dijon holds an International and Gastronomic Fair every year in autumn. With over 500 exhibitors and 200,000 visitors every year, it is one of the ten most important fairs in France. Dijon is also home, every three years, to the international flower show Florissimo. Dijon is famous for Dijon mustard, which originated in 1856, when Jean Naigeon of Dijon substituted verjuice, the acidic "green" juice of not-quite-ripe grapes, for vinegar in the traditional mustard recipe. Dijon is also a green city with an important tertiary sector, as well as a regional economic center with a diversified fabric, with a traditional food-processing center (Dijon cassis cream and kir, gingerbread, Lanvin chocolate...) and a renowned pharmaceutical sector. The historical centre of the city has been registered since 4 July 2015 as a UNESCO World Heritage site as one of the components of the climates of the Burgundy vineyard .

Source: Wikipedia