Pearl | |
---|---|
State | |
Country | |
Capital | |
Population | 0 |
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.
Brus | |
---|---|
State | Świętokrzyskie Voivodeship |
Country | Poland |
Capital | |
Population | 0 |
Brus (Serbian Cyrillic: Брус, pronounced [brûːs]) is a town and municipality located in the Rasina District of central Serbia. According to the 2011 census, the population of the town is 4,572, while the population of the municipality is 16,293. It is located at 430 metres (1,410 ft) above sea level, just below the Kopaonik ski resort.
Milwaukee (, locally ) is the largest city in the state of Wisconsin and the fifth-largest city...
Charlotte ( SHAR-lət) is the most populous city in the U.S. state of North Carolina. Located in...
Atlanta () is the capital and most populous city of the U.S. state of Georgia. With an estimated...