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A pearl is a hard object produced within the soft tissue (specifically the mantle) of a living ... Cultured or farmed pearls from pearl oysters and freshwater mussels make up the majority of those ....

Pearl (oyster) Facts, information, pictures | Encyclopedia.com ...


pearl, hard, rounded secretion formed inside the shell of certain mollusks, used as a gem. It is secreted by the epithelial cells of the mantle, a curtain of tissue ...

Pearls Teacher's Guide - American Museum of Natural History


students with the diagram of the mollusk shown on this page. BEFORE COMING TO ... Display a diagram of a pearl oyster or draw a simplified diagram on the ...

www.ask.com/youtube?q=Diagram of a Pearl Oyster&v=T18E58vOTus
Jan 3, 2012 ... http://www.jpearls.com Built from hexagonal aragonite crystals of calcium carbonate. Pearls are formed in Clams, Oysters and Mussels, and are ...

How Pearls are Formed - Pearls.com


Natural Pearls form when an irritant - usually a parasite and not the proverbial grain of sand - works its way into an oyster, mussel, or clam. As a defense ...

Natural pearls and cultured pearls: A basic concept ... - GemExpert


saltwater pearl oyster or freshwater mussels. The options ... The mantle is retracted on the diagram and .... Schematic diagram explaining natural pearl formation.

Pearl oysters - Aquaculture


Dec 7, 2011 ... 4 000 to 10 000 oysters are set on each of these 200 m oyster-rearing chains, which are spaced 10 m apart. Diagram of a pearl oyster culture ...

Types of Pearl & Pearl Origin | Coleman Douglas Pearls


NATURAL SEAWATER PEARLS or OYSTER PEARLS .... The following diagram gives an idea of the success rate of oyster pearl cultivation, Out of 1000 cultured ...

2. Morphology and Structure of Shell


Blue Point oyster (C. virginica) from Great South Bay, Long Island, N.Y. The ..... round and symmetrical shells of scallops, pearl .... The diagrams clearly show.

Detailed oyster diagram | Oregon Oyster Farm | Pinterest | Oysters


Explore Oregon Oyster, 736 1284, and more! ... stronger and more beautiful! Finding a pearl in an oyster is a beautiful thing. More ... Oyster Diagram More ...

Image Search: Pearl Oyster Diagram
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How Do Oysters Make Pearls? - Live Science


Nov 20, 2012 ... An oyster forms pearls by secreting a mineral substance called nacre and uses it to quarantine an irritant.

Oysters, Oyster Pictures, Oyster Facts - National Geographic


Although it is possible for food oysters to produce pearls, they should not be confused with actual pearl oysters, which are from a different family of bivalves.

Pearl Description - GIA


Perhaps the best-loved gems of all time, pearls—both natural and modern cultured ... This newly opened akoya pearl oyster reveals the cultured pearl that grew ...