Oysters. Actually, clams and certain other molluscs can also produce pearls, but it's only oyster pearls that are of gem quality.
Oysters are the sea animal.
No. Clams do not produce pearls. Pearls form in nacreous mollusks from the family Bivalvia. Clams are non-nacreous, but can have growths that are similar to pearls, but are referred to as calcareous concretions.
Oysters are not the only type of mollusk that can produce pearls. Clams and mussels can also produce pearls, but that is a much rarer occurrence. Most pearls are produced by oysters in both freshwater and saltwater environments.
Oysters make pearls
Oysters.
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Black Pearl oysters do not produce as many pearls naturally, therefore they have always been much rarer than white pearls. Now a days, pearls are often cultured and are not quite as rare.
Well, you can see Pearls Before Swine character art via the link below (which are Pearls Before Swine pictures).
Any shelled mollusk can produce some kind of pearl, but most are not valuable. Some freshwater mussels of the families Unionidae and Magaritiferidae produce pearls which are valued in the jewelry trade.
Native Americans may have found "pearls" in clams, but those were not "pearls" as we would consider them today. Clams are non-nacreous mollusks and do not produce actual pearls. They produce what are known as "calcareous concretions", which lack the pearly luster associated with pearls as we know them. More likely, Native Americans found pearls in mussels not clams. Those that were near coastal areas may have also found and collected marine pearls, but not from clams.
pollution and goverment stupidity
Make pearls and are food to Humans, animals, etc
Department of Fisheries and Oceans indicates that pearls can form within the scallop's body or between the mantle and the shell. The pearls are usually irregular and small, only 1-2 mm, although some reach 5-6 mm in older animals. Larger pearls are very rare. Only 1-5% of scallops produce pearls.