cabochon sapphire ring - jewelry appraisals by Carole C. Richbourg

Exceptional Kasmir sapphire, diamond & platinum ring. The cushion-cut sugarloaf cabochon weighing 25.87 carats, of Kasmir origin, no treatments broke an auction record at Sotheby's Magnificent Jewels sale in New York on December 9, 2015 for 5.1 million dollars, including premium.

5.07 ct blue diamond ring - jewelry appraisals by Carole C. Richbourg

A 5.07 carat fancy light grayish-blue diamond, sold for $500,000.00 over the low estimate at Sotheby's. 2017.

Certifications

Certifications

Coursework

Gemmological Association of Great Britian

American Society of Appraisers

Gemological Institute of America

Revere Academy, San Francisco