Lot 2004. Rare Colombian Thirty Cushion-Shaped Emerald and Thirty Cushion-Shaped Diamond Necklace. Estimate: HK$13,500,000.00 - HK$18,000,000.00 (US$1,700,000-2,300,000). © Christie's Images Ltd 2018.

Thirty cushion-shaped emeralds of 5.59 to 0.78 carats, thirty cushion-shaped diamonds of 1.52 to 0.33 carats, circular-cut diamonds, platinum and gold, 41.0 cm 
30 SSEF, 2018: 5.590 to 0.784 carats, Colombia, no clarity modification 
31 AGL, 2018: total 62.25 carats, 5.59 to 0.78 carats, Colombia, no clarity enhancement
30 GIA, 2014 to 2018: 1.52 to 0.33 carats, D to J colour, Internally Flawless to I2 clarity

The total weight of the certified emeralds is 62.25 carats
The total weight of the certified diamonds is 22.07 carats.