Pearl Surface in Pearl Grading
The surface cleanliness of a cultured or natural pearl has a direct correlation to its value. A pearl can never, according to rules set forth by the FTC, be graded as "flawless", but the degree or percentage of inclusions or surface imperfections can be measured by anyone with experience.
What to Look for on a Pearl's Surface
When grading pearls, the appearance of the surface of a pearl is one of the most important characteristics in determining its overall...