Lot 298. Important heart-shaped diamond necklace. Estimate 985,000 — 1,480,000 CHF. Photo: Sotheby's.

Composed of a graduated line of heart-shaped diamonds, supporting a detachable pendant set with a similarly shaped diamond weighing 15.44 carats, length approximately 380mm.

Accompanied by GIA report no. 2171893363, stating that the diamond weighing 15.44 carats is D Colour, VVS1 Clarity, together with a working diagram stating that the diamond may be internally flawless after minor repolishing.

Also accompanied by GIA report no. 2171893359, stating that the diamond weighing 1.98 carats is H Colour, SI2 Clarity; no. 1172893362, stating that the diamond weighing 2.13 carats is H Colour, VVS2 Clarity; and no. 6173893357, stating that the diamond weighing 3.03 carats is F Colour, VS2 Clarity. 

Sotheby's. Magnificent Jewels and Noble Jewels, Geneva, 16 Nov 2016, 10:30 AM