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ShareA pearl is a hard, rounded object produced by certain mollusks, primarily oysters.
Pearl is valued as a gemstone and is cultivated or harvested for jewellery.
Pearls are formed inside the shell of certain bivalve mollusks.
For more information about the topic Pearl, read the full article at Wikipedia.org, or see the following related articles:
Oyster — The name oyster is used for a number of different groups of mollusks which grow for the most part in marine or brackish water. Inside a usually ... > read more
Animal shell — A shell is a hard, rigid outer layer, which has evolved in a very wide variety of different animals, including mollusks, sea urchins, crustaceans, ... > read more
Abalone — Abalone is a species of shellfish (mollusks) from the Haliotidae family (genus Haliotis). The abalones belong to the large class of gastropods ... > read more
Mollusca — The molluscs or mollusks are the large and diverse phylum Mollusca, which includes a variety of familiar creatures well-known for their decorative ... > read more
Mussel — A mussel is a bivalve mollusc that can be found in lakes, rivers, creeks, intertidal areas, and throughout the ocean. The saltwater mussels (family ... > read more
Cuttlefish — Cuttlefish are animals of the order Sepiida, and are marine cephalopods, small relatives of squids and nautilus. Cuttlefish have an internal shell, ... > read more
Ocean acidification — Ocean acidification is the name given to the ongoing decrease in the pH of the Earth's oceans, caused by their uptake of anthropogenic carbon dioxide ... > read more
Fishery — A fishery (plural: fisheries) is an organized effort by humans to catch fish or other aquatic species, an activity known as fishing. Generally, a ... > read more
Scallop — Scallops are the family Pectinidae of bivalve molluscs. Like the true oysters they have a central adductor muscle, and thus their shells have a ... > read more
Gastropod shell — The gastropod shell is an animal shell which is part of the body of a gastropod or snail. It is an external skeleton or exoskeleton, which serves not ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Pearl at Wikipedia.org. See the Wikipedia copyright page for more details.
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