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An art deco kunzite and diamond ring, by Cartier, circa 1920

The oval mixed-cut kunzite, between pierced geometric shoulders set with single and brilliant-cut diamonds, signed Cartier and numbered, ring size I½. Estimate: £2,500 - 3,500

Bonhams. Jewellery, 14 Jan 2009 Knightsbridge. www.bonhams.com Copyright © 2002-2009 Bonhams 1793 Ltd., Images and Text All Rights Reserved.