My son planted strawberry seeds this year in a planter. Without the seeds, no strawberry plants would have sprouted. Without a little help most mussels or oysters won't grow a pearl either.
But there are ways to "start a pearl" growing in these mollusks (or molluscs). (Mollusks are any of numerous chiefly marine invertebrates of the phylum Mollusca, typically having a soft unsegmented body, a mantle, and a protective calcareous shell and including the edible shellfish and the snails.)
Several people worked on figuring out to start a pearl growing, but Mikimoto is often the man credited with carrying the process to full development.
It's similar to taking a plant cutting. Has your mother ever visited a friend's garden who shared a "slip" of geranium with her so she could start her own plant?
Well, in a similar way, to get a cultured pearl started, the mollusk needs a piece of mantle tissue from another mollusk.
A tiny piece of mantle tissue from a mussel or oyster is inserted into a live mollusk which is set back into a body of water. A "pearl sac" is developed around the piece and the mollusk begans coating the tissue with layers of nacre....the substance of pearls....making a pearl.
Often, for both sea and freshwater pearls, along with the tissue is placed a shell bead which can be a variety of shapes. The mollusk then coats this bead with pearl substance. This way, the shape of pearl can be controlled.
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Orignal From: My son planted strawberry seeds
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