time:2021-11-19 source:sznbone Views:
The finish quality requirements of freshwater pearls:
Flawless: The surface of the pearl is smooth and delicate when observed with naked eyes, and it is extremely difficult to observe the surface flaws.
Slight flaws: There are very few flaws on the surface, like pinpoints, which are difficult to observe with the naked eye.
Small flaws: There are minor blemishes, which are easy to observe with the naked eye.
Flaws: The blemishes are obvious, occupying a quarter of the surface area.
Serious flaws: The flaws are obvious, and they occupy more than a quarter of the surface area.