A pair of Burma and Ceylon sapphire and diamond ear pendants, by David Webb. Estimate $125,000 – $170,000.Photo Christie's Image Ltd 2015

Each suspending a detachable circular-cut diamond and graduated sapphire bead triple tassel, to the surmount set with an oval-cut cabochon sapphire, weighing approximately 30.43 and 28.42 carats, within a two-row circular-cut diamond surround, 3 1/2 ins., mounted in platinum and 18k white gold. Signed Webb for David Webb

With Certificate of Authenticity from David Webb

Accompanied by report no. CS 62867 A dated 5 September 2014 from the AGL American Gemological Laboratoriesstating that it is the opinion of the Laboratory that the origin of the sapphire weighing 30.43 carats would be classified as Burma (Myanmar). Heat enhancement: None. Clarity enhancement: None

With report no. CS 62867 B dated 5 September 2014 from the AGL American Gemological Laboratories stating that it is the opinion of the Laboratory that the origin of the sapphire weighing 28.42 carats would be classified as Ceylon (Sri Lanka). Enhancement: standard heat

Christie's. IMPORTANT JEWELS, 20 October 2015, New York, Rockefeller Plaza