A diamond, fancy-coloured diamond and emerald ring, by David Morris. Photo: Bonhams.

Of bombé design, pavé-set with brilliant-cut diamonds, collet-set with an applied flower motif of pear-shaped purplish pink diamond petals and a brilliant-cut diamond stamen, between marquise-cut emerald leaves, to an 18 carat yellow gold band, diamonds approximately 1.35 carats total, maker's mark DM, partial London hallmark, ring size L½. Estimate £5,000 - 7,000 (€6,000 - 8,400)

Accompanied by a report from AnchorCert stating that one of the diamonds weighing 0.10 carat is Fancy Intense Purplish Pink, natural colour, SI2 clarity. Report number 20009780, dated 2 May 2013.

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