Please select from the following: |
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| How pearls are graded as to quality |
| Grade A Category |
Pearls with no more than one imperfection or a group of localized imperfections concentrated over less than 10% of the surface. |
| Grade B Category |
Pearls with imperfections concentrated over less than a third of the surface. |
| Grade C Category |
Pearl with "light concentrations" of imperfections over less than two-thirds of the surface. |
| Grade D Category |
Pearls with "light" imperfections over more than two-thirds of the surface and "no deep imperfections". |
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