Lot 123. An Art deco 9.11 carats, J colour, VVS1 clarity diamond ring, by Cartier. Estimate £120,000 – £190,000 ($173,520 - $274,740). Photo Christie's Image Ltd 2016.  

The cut-cornered rectangular step-cut diamond weighing approximately 9.11 carats, claw-set to baguette-cut diamond shoulders and a polished hoop, inner hoop inscribed, circa 1930, ring size J-K, French assay marks for platinum, in later red leather Cartier case. Signed Cartier, no.54-5478

Accompanied by report no.5172048572 dated 4 March 2015, from the GIA Gemological Institute of America stating that the diamond is J colour, VVS1 clarity, with faint fluorescence   

Christie's. IMPORTANT JEWELS, 15 June 2016, London, King Street