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en.wikipedia.org/wiki/Pearl

A pearl is a hard object produced within the soft tissue (specifically the mantle) of a living .... Most freshwater cultured pearls sold today come from China. .... Very few matched strands of natural pearls exist, and those that do often sell for ...

www.livescience.com/32289-how-do-oysters-make-pearls.html

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

www.ask.com/youtube?q=Where+Do+Pearls+Come+from&v=T18E58vOTus
Jan 3, 2012 ... Pearls are formed in Clams, Oysters and Mussels, and are found in many p... ... How did I get here from watching a pearl AMV???. Read more.

www.todayifoundout.com/index.php/2016/01/oysters-make-pearls

Jan 11, 2016 ... However, despite generally needing to do an X-ray test to determine whether a given pearl was cultivated or grown naturally (natural pearls ...

animals.howstuffworks.com/marine-life/question630.htm

How do oysters make pearls, and what is the difference between natural and cultured ... This ligament is positioned where the valves come together, and usually ...

wonderopolis.org/wonder/does-every-oyster-have-a-pearl

Do you know where pearls come from? They don't grow on trees. You can't plant them. They aren't mined out of the ground either. So where do pearls come ...

www.purepearls.com/pearl-origins.html

Find out about the history and origins of Japanese Akoya pearls, South Sea pearls, Freshwater pearls and Tahitian pearls.

www.pearls.com/pages/how-pearls-are-formed

How pearls are formed by saltwater and freshwater mollusks, the culturing process and what about ... Pearls can come from either salt or freshwater sources .

www.pearls.com/pages/where-pearls-come-from

WHERE PEARLS COME FROM: Historically, the world's best pearls came from the Persian Gulf, especially around what is now Bahrain. The pearls of the ...

www.wixonjewelers.com/education/pearls/how-pearls-are-formed

Live oysters below the surface of the sea grow pearls. Gemstones must be cut and polished to bring out their beauty, but pearls need no such treatment to reveal ...