The sugarloaf cabochon ruby between scrolling shoulders set with baguette-cut diamonds and rose-cut rubies, mounted in platinum, principal ruby approximately 13.50 carats, signed Drayson London, ring size L

Accompanied by a report from GCS stating that the ruby is of Burmese origin, with indications of moderate colour and clarity enhancement by a coloured oil and no indications of heating. Report number 5775-2083, dated 1 June 2015.

Bonhams. FINE JEWELLERY, 24 Sep 2015 12:00 BST -LONDON, NEW BOND STREET