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The term Kaiserpfalz (German: [ˈkaɪzɐˌpfalts], "imperial palace") or Königspfalz (German: [ˈkøːnɪçsˌpfalts], "royal palace", from Middle High German phal[en]ze to Old High German phalanza from Middle Latin palatia [plural] to Latin palatium "palace") refers to a number of castles and palaces across the Holy Roman Empire that served as temporary, secondary seats of power for the Holy Roman Emperor in the Early and High Middle Ages.
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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.
An aurora (plural: auroras or aurorae), also known as the polar lights or aurora polaris, is a...
Mombasa ( mom-BASS-ə, also US: -BAH-sə) is a coastal city of Kenya along the Indian Ocean. The...
Quincy-le-Vicomte is a commune in the Côte-d'Or department in eastern France.