Important diamond necklace and a diamond pendant, Graff. Photo Sotheby's.

Designed as a line of alternating step-cut diamonds and variously cut diamonds of yellow tint, length approximately 410mm, signed Graff, numbered, case by Graff, suspending a detachable heart-shaped fancy intense yellow diamond weighing 30.01 carats, signed Graff; together with an additional chain accented with a heart-shaped near-colourless diamond upon which the 30.01 carat diamond pendant may be attached, length approximately 400mm, signed Graff, numbered, unillustrated, case by Graff. Estimation 625,000 — 980,000 CHF

Accompanied by GIA report no. 15640959, stating that the 30.01 carat diamond is Fancy Intense Yellow, Natural Colour, VS1 Clarity, together with six additional GIA reports stating that diamonds weighing 0.73 to 1.39 carats are Fancy Intense Yellow, Natural Colour, VVS1 to SI1 Clarity.

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 13 mai 2014 - http://www.sothebys.com/