A gold and diamond ring, possibly Flemish, circa 1600-1650. Photo: Bonhams.

The central point-cut diamond within a quatrefoil cluster of table-cut diamonds, alternating with ribbed gold talon motifs, the bezel and shoulders with cross-hatched decoration, traces of black enamel remaining, one diamond deficient, ring size J. Estimate £4,000 - 6,000 (€4,900 - 7,300)

Bonhams. FINE JEWELLERY. London, New Bond Street, 30 Apr 2014 - www.bonhams.com