Lot 2055. Exclusive diamond, fancy vivid green-blue diamond and 11.69 carats diamond necklace, Bulgari. Estimate HKD 12,500,000 - HK$18,000,000 (US$1,600,000-2,300,000). © Christie's Image Ltd 2019 

Modified pear brilliant-cut diamond of 11.69 carats, fancy vivid green-blue pear modified brilliant-cut diamond of 1.02 carats, circular and baguette-cut diamonds, gold, 35.8 cm, signed Bvlgari, made in Italy, no. 5677.

GIA, 2019, report no. 6194987302: 11.69 carats, F colour, Internally Flawless clarity
GIA, 2019, report no. 15676905: 1.02 carats, Fancy Vivid Green-Blue colour, I1 clarity
9 GIA, 2006-2008: 1.70 to 0.90 carats, G colour, VVS2 to VS2 clarity

Christie's. Hong Kong Magnificent Jewels, Hong Kong, 28 May 2019