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Very impressive Fancy Vivid Yellow diamond ring. Photo Sotheby's

Claw-set with a fancy vivid yellow cut-cornered rectangular modified brilliant-cut diamond weighing 74.80 carats, to a plain yellow gold mount, size 52. Est. 2,600,000—3,600,000 CHF - Hammer Price with Buyer's Premium:  3,162,500 CHF

Accompanied by GIA report no. 11179460 stating that the diamond is Fancy Vivid Yellow, Natural Colour, VS1 Clarity.

Further accompanied by a GIA letter dated 6 June 2000, stating that according to the records of the GIA Gem Trade Laboratory, the 74.80 carat cut-cornered rectangular modified brilliant, described in GIA Colored Diamond Grading Report 11179460, is the largest Fancy Vivid Yellow, Natural Colour, diamond they have graded as of the date of this letter and report issued.

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Fancy Yellow diamond ring. Photo Sotheby's

Claw-set with a fancy yellow oval diamond weighing 16.04 carats, the shoulders and frame set with brilliant-cut stones, mounted in yellow gold and platinum, size 52. Est. 200,000—260,000 CHF - Hammer Price with Buyer's Premium:  230,500 CHF

Accompanied by GIA report no. 2105297104 stating that the diamond is Fancy Yellow, Natural Colour, SI1 Clarity.

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Pair of Fancy Intense Yellow diamond ear clips. Photo Sotheby's

Each set respectively with a fancy intense yellow brilliant-cut diamond weighing 3.27 and 3.37 carats respectively, bordered by brilliant-cut diamonds, mounted in platinum and yellow gold. Est. 145,000—200,000 CHF - Hammer Price with Buyer's Premium:  206,500 CHF

Accompanied by GIA reports no. 5101560323 and no. 210560823 stating that both diamonds are Fancy Intense Yellow, Natural Colour, VVS1 Clarity,

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Pair of fancy intense yellow pendent earrings. Photo Sotheby's

Each suspending a fancy intense yellow cut-cornered square modified brilliant-cut diamond weighing respectively 3.20 and 3.30 carats, to a surmount set with square- and brilliant-cut diamonds, mounted in platinum and yellow gold. Est. 85,000—125,000 CHF - Hammer Price with Buyer's Premium:  170,500 CHF

Accompanied by GIA reports no. 15188619 and no. 16443102, stating that the 3.20 carat and 3.30 carat diamonds are Fancy Intense Yellow, Natural Colour, VS2 and VS1 Clarity respectively.

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Fancy yellow diamond ring. Photo Sotheby's

The fancy yellow cut-cornered rectangular modified brilliant-cut diamond weighing 6.01 carats, flanked by two half moon-shaped stones, mounted in white and yellow gold, size 53. Est. 42,000—70,000 CHF - Hammer Price with Buyer's Premium:  96,100 CHF

Accompanied by GIA report no.10657051, dated June 25th, 1999, stating that the diamond is Fancy Yellow, Natural Colour, VVS2 Clarity.

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Fancy Intense Yellow diamond ring. Photo Sotheby's

Of cluster design, claw-set with a fancy intense yellow brilliant-cut diamond weighing 6.48 carats, bordered by brilliant- and circular-cut diamonds, mounted in platinum, size 65. Est. 12,000—18,000 CHF - Hammer Price with Buyer's Premium:  92,500 CHF

Accompanied by GIA report no. 1102879600 stating that the diamond is Fancy Intense Yellow, Natural Colour, I1 Clarity.

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Fancy Yellow diamond ring. Photo Sotheby's

The fancy yellow cut-cornered rectangular step-cut diamond weighing 6.01 carats, flanked by triangular stones, mounted in yellow gold and platinum, size 53. Est. 31,000—41,000 CHF - Hammer Price with Buyer's Premium:  74,500 CHF

Accompanied by GIA report no. 5111200815 stating that the diamond is Fancy Yellow, Natural Colour, VVS2 Clarity, together with an additional GIA worksheet stating that the diamond may be Potentially Flawless after repolishing.

Sotheby's. Magnificent Jewels. 17 Nov 09. Geneva www.sothebys.com