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An art deco onyx, coral and diamond bracelet, by Boucheron. Photo Christie's Image Ltd 2014

Designed as two lines of graduated onyx and coral beads interspersed with diamond set elements, 1920s, 19.0 cm. Signed Boucheron Paris. Estimate CHF30,000 – CHF40,000 ($34,358 - $45,811)

Christie's. GENEVA MAGNIFICENT JEWELS. 14 May 2014, Geneva -http://www.christies.com/