He's a gemologist at the Gemological Institute of America where he oversees diamond grading, colored stone identification ... determines a pearl's value. Natural versus cultured.

A great irony of pearl history is that the least expensive cultured pearl product in the market today rivals the quality of the most expensive natural pearls ever found. The price-value anomaly is ...

For at least 164,000 years, oysters have been part of the human diet, but people have been finding pearls in oysters for much longer — as early as 2300 BC when Chinese royalty received them as ...

An curved arrow pointing right. South Sea pearls are the largest cultured-pearl variety, sometimes reaching over 20 millimeters in diameter. The Pinctada maxima oyster can take up to five years to ...

The star of the show was the Abernethy Pearl, a 10.91-carat specimen found in 1967, which achieved £93,951. While that sounds impressive, Fawcett says a similar marine-cultured pearl — from an ...

He's a gemologist at the Gemological Institute of America where he oversees diamond grading, colored stone identification ... determines a pearl's value. Natural versus cultured.