This system grades pearls on a scale from A to AAA, with an additional grade being given to extremely rare and high quality pearls.
| Grade | Description |
| Presidential(Gem Quality) | Near Round to the eye. Supreme luster with excellent matching and clean surface quality >95% blemish free. |
| AAA | Near round to the eye. Brilliant luster, 80-90% free of any blemishes or marks. |
| AA | Medium luster with surface defects over not more than 60% of the surface area. |
| A | Noticeably off round. Very little to no luster, 70-90% free of any blemishes or marks. |
More Freshwater Pearl Information:
Freshwater Pearl BasicsFreshwater Pearl Sizes
Freshwater Pearl Colors
Freshwater Pearl Grading
