Pearls – precious and beautiful
Pearls are the hard round part of a living shell mollusk and they are made of calcium carbonate. The ideal Pearl Earrings is perfectly round and smooth but there are baroque pearls that may be of other sizes and shapes. There are many uses of pearls in different languages and they mean something rare and splendid. Human beings have admired and valued the pearls as gemstones for centuries. Almost many kind of mollusk can produce the pearl and it happens when any irritant is trapped in its mantle.
However, not all of these pearls are considered sufficiently precious to be considered as gemstones. The true iridescent pearls are the most coveted variety of pearls and either the pearl oysters or the river mussels produce them. The former lives in the sea and the latter in the river. The Akoya Salt Water pearls are grown in the Akoya oyster. These are among the smallest pearls in the world. The Akoya pearls are mainly grown in Japan and China a picture of the Akoya pearl keeps you, wondering about its luster. The pearls are usually of 2 to 11 millimeters in size. The Akoya pearls were earlier produced in good quantities by Japan but the Chinese also have been producing good Akoya pearls from the 1980s. The Fresh Water Pearls grow within certain species of freshwater mussels only. They belong to particular families of freshwater mussels. The mantle of the living bivalve can produce the pearl just as if it produces the inner layer of its mantle composed of mother of pearl or nacre.