Lot 252. A Diamond Rivière Necklace. Estimate CHF1,600,000 – CHF2,200,000 ($1,820,054 - $2,502,575). Price realised CHF 2,045,000. © Christie's Image Ltd 2014

Set with twenty-seven graduated circular-cut diamonds, mounted in gold, 38.0 cm. 

Accompanied by 9 reports, all dated 2014, from the GIA Gemological Institute of America stating the following:

Weight - Colour - Clarity - Report number
17.72 carat - Fancy Light Yellow - VS1 - 2155959397
16.13 carat - W to X range - VVS2 - 2155959399
15.73 carat - U to V range - VS1 - 1152959386
15.36 carat - W to X range - VS2 - 1152959378
15.02 carat - Fancy Light Yellow - VS2 - 2155959387
13.90 carat - W to X range - VS1 - 2155959406
12.77 carat - U to V range - VS1 - 2155959369
12.52 carat - Fancy Light Yellow - VVS2 - 2155959373
11.96 carat - S to T range - VS2 - 1152959391

Christie's. GENEVA MAGNIFICENT JEWELS. 14 May 2014. Geneva