A magnificent art deco sapphire ring, circa 1935. Photo courtesy Bonhams.

The step-cut sapphire, weighing 6.22 carats, in an architectural scrolling mount, ring size Q½. Estimate £220,000 - 320,000 (€270,000 - 390,000)

Accompanied by a report from Gübelin stating that the sapphire is of Kashmir origin, with no indications of heating. Report number 13070096, dated 10 July 2013. 

Accompanied by a report from SSEF stating that the sapphire is of Kashmir origin, with no evidence of heat treatment. Report number 71562, dated 5 November 2013.

Bonhams. FINE JEWELLERY INCLUDING SELECTED JEWELS FROM THE COLLECTION OF BARBARA TAYLOR BRADFORD. London, New Bond Street. 5 Dec 2013 -www.bonhams.com