A natural pearl pendant and cultured pearl necklace. Photo courtesy Bonhams.

centering a drop-shaped natural pearl, measuring approximately 11.6 x 11.5mm., with single and round brilliant-cut diamond surmount, suspended from a multi-colored cultured pearl necklace; pearl surmount mounted in platinum; clasp mounted in silver; length: 12 1/4in. (cultured pearls not tested for origin of color). Sold for US$ 91,300 (€66,092)

Accompanied by GIA report #5141863590, dated August 3, 2012, stating the pendant as: natural pearl, saltwater, no indications of treatment.

Bonhams. Fine Jewellery New York. 15 Oct 2012 - www.bonhams.com