He says that part of the reason the Marie Antoinette pearl is worth so much is because it's a natural pearl, which brings us to one quality that determines a pearl's value. Natural versus cultured.
Illegal fishing of oyster pearls in the wild — natural pearls — is no longer a concern, mainly because they are so rare that it is not worth the effort. However, the pillage of freshwater ...
Natural pearls vary in size ... Pearls can be white, black, grey, red, blue, or green, with black pearls being native to the South Pacific. Pearls that are not perfectly round are called baroque ...