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Silver-Topped Gold, Pearl and Diamond Tiara-Necklace, late 19th century. Estimate 2,000 — 3,000 USD. Photo: Sotheby's.

The graduating scrollwork flourishes set with numerous single, rose and old mine-cut diamonds weighing approximately 4.70 carats, accented by 14 button-shaped pearls measuring approximately 6.4 to 4.1 mm; together with a tiara fitting, the sides of the design are detachable for variety of wear; late 19th century.With fitted box stamped Carrington & Co. Jewellers. 

Property formerly from the collection of Mamie Doud Eisenhower

Please note the pearls have not been tested for natural origin.

Sotheby's. Important Jewels, New York, 24 sept. 2015