What Causes A Pearl To Form In An Oyster?


Can a pearl keep growing after the oyster dies?

My grandma got an oyster in a can that was guaranteed a pearl in it and she hasn't opened it yet. She has had it for at least 40 years and it was 3 years old when she got it, so that thing has to be dead. So, would the pearl keep growing after the oyster dies? And how long do oysters usually live? Thanks. :)

The oyster was dead when it went into the can, and the pearl can't grow without a live oyster. I would not open the can, you might find a collector ready to buy the sealed can.

When oysters are harvested, are there a lot of pearls found?

can there be more than one pearl in an oyster at a time?

You might occasionally hear of someone finding a pearl in their oyster, but most oyster beds are harvested frequently enough that there's little chance.

The most pearls are generated by the cultured pearl industry. See WIKI below.

How rare is a white, pink, and green pearl?

I bought a medium sized pearl with the colors white, pink, and green in it. I was told that this is very rare and can be pretty expensive, and am wondering if this is true. How rare is this pearl, and how much should it usually cost? If this helps - The pearl is actually white based with hints of pink and green in it. It is not dyed that color, I went to a place where you pick out pearls from the clams yourself.

The pearl is likely treated. What they do not tell you at the place where you pick the pearls out of the oyster is that the oyster they opened is not the original host. In other words, the pearl was put into the oyster - it did not grown there.

There are factories in Japan and China that specialize in this. They insert a pearl into a small pearl oyster and then drop the shell into a solution of alcohol and other chemicals. This causes the shell to constrict and die so it appears as though you are opening a shell and finding a pearl when you visit the kiosk selling "pearls in oysters".

The seeded shells cost $2 to $5 (around $2 in China and $5 in Japan) and most pearls are around 7 millimeters. The value on a wholesale level for the grade they use is very close to the selling price of the shell.

why does an oyster make a pearl?

An oyster's irritant is source of beauty to us. Oyster's create pearls in response to an irritant such as a grain of sand, a pebble, or even a microorganism. The oyster then begins to secrete a substance called "nacre" which is composed of the mineral argonite and a sticky, binding substance called "conchiolin". The oyster continues to excrete these substances until the irritant is well-coated, thereby forming a pearl. The translucent properties of argonite give the finished pearl its beauty and depth. By the way, pearls can also be created by clams and mussels. And what people call "mother-of-pearl" is a lining of nacre on the shell of an oyster.

I hope this answered your question! As a librarian, I always try to answer questions using trustworthy sources. The source for this information came from an on-line teachers' guide to the PBS science show Newtons Apple. Check out the link for more info and a cool-looking experiment!

- A Librarian in California
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How much is a pink pearl harvested from an hawaii oyster worth?

Hawaiian oysters are saltwater and it's freshwater oysters that produce pink pearls. You're probably talking about a Chinese cultured freshwater pearl. Unless it's huge, say upwards of 12mm, one pearl isn't worth a lot, especially if it came from one of those preserved, pick your own oyster oysters.

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