An important diamond necklace, by Graff. Estimate $950,000 – $1,200,000. Photo Christie's Image Ltd 2015

Designed as three rows of seventy-two graduated square or rectangular-cut diamonds and seventy-five circular-cut diamonds, joined by a circular-cut diamond bar clasp, mounted in platinum, 16 ins., in a Graff navy leather box. Signed Graff, no. 5013 

With forty-five reports dated from 18 September 2003 to 13 April 2004 from the Gemological Institute of America stating that the circular-cut diamonds, weighing from approximately 2.07 to 0.70 carats, range from F to I color, and from Internally Flawless to VS2 clarity

With fifty-two reports dated from 21 November 2003 to 26 March 2004 from the Gemological Institute of America stating that the square and rectangular-cut diamonds, weighing from approximately 3.06 to 0.72 carats, range from F to I color, and from Internally Flawless to SI2 clarity

Christie's. MAGNIFICENT JEWELS, 14 April 2015, New York, Rockefeller Plaza