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Diamond tiara, circa 1900. Photo Sotheby's

The centre designed as two wreaths, each swing-set to the centre with circular-cut and pear-shaped diamonds, between two modified rectangular panels of open work floral and foliate design, set with circular-cut and rose diamonds, inner circumference approximately 290mm, central motif detachable and can be worn as a brooch or pendant, the panels can be worn as brooches. Estimation 15,000 — 20,000 GBP 

Sotheby's. Fine Jewels. London | 12 déc. 2013. www.sothebys.com