A Fine Platinum, Natural Pearl and Diamond Necklace, Circa 1920, consisting of a central pendant containing one drop shape pearl measuring approximately 16.30 x 14.72 x 14.13 mm, the necklace and pendant containing 15 marquise cut diamonds weighing approximately 0.75 carat total, 61 baguette cut diamonds weighing approximately 8.53 carats total, and 193 old European cut diamonds weighing approximately 3.42 carats total. Stamp: Pt 850 1322.Accompanied by a Gemological Institute of America pearl identification certificate number 6173701109, dated June 22, 2016, stating Identification: Natural pearl, Environment: Saltwater, Mollusk: Pinctada species, Treatments: No indications of treatment. 22.50 dwts.