Is there a standardized grading system for pearls?
Pearls do not have a standardized grading system because each pearl is different; some are so unique that they would not be able to be compared, so to have a grading system would mean that there would have to be hundreds of quality parameters. Thus, there is no universal grading system. General descriptive terms for pearl quality are often the same as used to describe anything else: excellent, very good, average, etc.
