Jewellery, Watches and Objects of Vertu (11 April 2017)

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Date of Auction: 11th April 2017

Sold for £1,800

Estimate: £1,800 - £2,000

An Art Deco diamond brooch/pendant, the geometric openwork rectangular brooch with scalloped details, pavé set throughout with brilliant and single-cut diamonds, to central raised millegrain collet set brilliant-cut diamond, to brooch fitting and with loops to attach back chain, in a dark maroon leather case, interior silk signed ‘Coosemans, Joaillier Orfivre du Roi et de la Reine, 52 Bd de Waterloo, Bruxelles’, principal diamond approximately 1.3 carats, total diamond weight approximately 3.90 - 4.00 carats, brooch length 63mm x width 18mm. £1800-2000

Condition Report

The central diamond has estimated colour I/J and estimated clarity SI2-P1 - there is a surface reaching fracture to one side of the table, and a small internal linear inclusion to the edge of the table. All the other diamonds are bright and lively, none missing. The mount is in good condition, light wear only. The mount is not hallmarked, and the white precious metal is untested. It is assumed to be platinum but untested as such. Gross weight is 14.1gm.