Magnificent Fancy Vivid Yellow Diamond Necklace. photo Sotheby's

Set with cut-cornered rectangular modified brilliant-cut and cut-cornered square modified brilliant-cut diamonds of fancy vivid color weighing a total of 100.17 carats, mounted in 18 karat gold, length 16¾ inches. Est. 2,000,000—3,000,000 USD. Lot Sold 3,554,500 USD

Accompanied by 42 GIA reports stating Fancy Vivid Yellow, Natural Color, Internally Flawless to SI1 clarity.

Fancy Intense Yellow Diamond Ring. photo Sotheby's

The cut-cornered rectangular mixed-cut diamond of fancy intense yellow color weighing 27.80 carats, flanked by triangular-shaped diamonds weighing 3.50 carats, mounted in platinum and gold, size 7. Est. 400,000—600,000 USD. Lot Sold 602,500 USD

Accompanied by GIA report no. 2115664354 stating that the diamond is Fancy Intense Yellow, Natural Color, SI1 clarity.

Pair of Fancy Intense Yellow Diamond and Diamond Earclips. photo Sotheby's

The cut-cornered square modified brilliant-cut diamonds of fancy intense yellow color weighing 12.75 and 12.29 carats, framed by round diamonds weighing approximately 14.10 carats, mounted in platinum and gold. Est. 300,000—400,000 USD. Lot Sold 488,500 USD

Accompanied by GIA report no. 2115664333 stating that the 12.75 carat diamond is Fancy Intense Yellow, Natural Color, VS1 clarity; and GIA report no. 1112664342 stating that the 12.29 carat diamond is Fancy Intense Yellow, Natural Color, VS1 clarity.

Fancy Yellow Diamond Ring. photo Sotheby's

The square emerald-cut diamond of fancy yellow color weighing 14.00 carats, flanked by round diamonds weighing approximately .60 carat, mounted in platinum and gold, size 3¼. Est. 120,000—150,000 USD. Lot Sold 260,500 USD

Accompanied by GIA report no. 5111613627 stating that the diamond is Fancy Yellow, Natural Color, VS2 clarity.

Fancy Light Yellow Diamond Ring. photo Sotheby's

The modified rectangular mixed-cut diamond of fancy light yellow color weighing 7.95 carats, flanked by trapeze-cut diamonds of yellow hue weighing approximately 1.30 carats, within a frame of small round diamonds of pink hue weighing approximately .70 carat, the shank set with near colorless round diamonds weighing approximately 1.75 carats, mounted in platinum and 18 karat white and pink gold, size 6¾. Est. 50,000—75,000 USD. Lot Sold 98,500 USD

Accompanied by a copy of GIA report no. 14773481 stating that the 7.95 carat diamond is Fancy Light Yellow, Natural Color, VS1 clarity.

Fancy Intense Yellow Diamond Ring. photo Sotheby's

The emerald-cut diamond of fancy intense yellow color weighing 5.30 carats, flanked by marquise-shaped and tapered baguette diamonds weighing approximately 1.20 carats, mounted in 18 karat white and yellow gold, size 8. Est. 60,000—80,000 USD. Lot Sold 80,500 USD

Accompanied by GIA report no. 6107848861 stating Fancy Intense Yellow, Natural Color, VS1 clarity.

Pair of Fancy Yellow Diamond Earstuds. photo Sotheby's

The cut-cornered rectangular modified brilliant-cut diamonds of fancy yellow color weighing 3.68 and 3.63 carats, mounted in 18 karat gold. Est. 60,000—80,000 USD. Lot Sold 76,900 USD

Accompanied by GIA report nos. 17458027 and 17458077 stating that the diamonds are Fancy Yellow, Natural Color, VVS1 clarity.

Fancy Deep Brownish Greenish Yellow Diamond Ring. photo Sotheby's

The pear-shaped diamond of fancy deep brownish greenish yellow color weighing 6.04 carats, framed and flanked by round diamonds weighing approximately 2.75 carats, mounted in 18 karat gold and platinum, size 6¾. Est. 20,000—25,000 USD. Lot Sold 48,750 USD

Accompanied by GIA report no. 2115817136 stating Fancy Deep Brownish Greenish Yellow, VS2 clarity.

Fancy Intense Yellow Diamond Ring. photo Sotheby's

The cut-cornered rectangular modified brilliant-cut diamond of fancy intense yellow color weighing 2.28 carats, framed by round and marquise-shaped diamonds weighing approximately 2.75 carats, mounted in 18 karat white gold, size 4¼. Est. 20,000—30,000 USD. Lot Sold 25,000 USD

Accompanied by GIA report no. 11045697 stating Fancy Intense Yellow, Natural Color, VS1 clarity.

Fancy Intense Yellow Diamond Ring. photo Sotheby's

The marquise-shaped diamond of fancy intense yellow color weighing 2.32 carats, framed by round diamonds, mounted in gold and platinum, size 10¼. - Est. 15,000—20,000 USD. Lot Sold 23,750 USD

Accompanied by GIA report no. 5111300682 stating Fancy Intense Yellow, Natural Color, VS2 clarity.

Pair of Diamond and Colored Diamond Earclips. photo Sotheby's

The flowerheads set with near colorless round diamonds weighing approximately 8.10 carats, set in the center with round diamonds of yellow hue weighing approximately 1.40 carats, mounted in 18 karat white gold. Est. 8,000—12,000 USD. Lot Sold 12,500 USD

Sotheby's. Magnificent Jewels. 20 Apr 10. New York www.sothebys.com