Pearl vs Ciudad Victoria

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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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Ciudad Victoria (Spanish pronunciation: [sjuˈðað βikˈtoɾja] (listen)) is the capital of the Municipality of Victoria and the Mexican state of Tamaulipas. It's located in the northeast of Mexico at the foot of the Sierra Madre Oriental. It borders the municipality of Güémez to the north, Llera to the south, Casas Municipality to the east, and the municipality of Jaumave to the west. The city is situated 246 km (153 mi) from Monterrey and 319 km (198 mi) from the US - Mexico border.

Ciudad Victoria is named after the first president of Mexico, Guadalupe Victoria.In 1825 Ciudad Victoria became the state capital. It's home to higher education institutions such as the Autonomous University of Tamaulipas and the Technological Institute of Ciudad Victoria. General Pedro José Méndez International Airport is located on the outskirts of town. As a state bureaucratic center, it's the seat of the three political powers and contains sites of tourist and cultural interest.

Source: Wikipedia