> On 12 Sep 2014, at 12:44 am, Dean Hansen <hanse112@xxxxxxx> wrote:
> ...
> Pearls formed around a sand
> grain (back in the old days) rarely were as perfect, and the process took
> years.
I understand (only recently) that the sand grain thing is not correct, or at
least rare. And likewise, as you've said, they don't use sand to "seed" a
cultured pearl. The natural pearls actually usually form around parasites that
have entered the oyster's shell living space.
Cheers,
Marc
Snowy Mts, Oz
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