Fancy Intense Yellow Diamond Ring.

The cut-cornered rectangular modified brilliant-cut diamond of fancy intense yellow color weighing 17.97 carats, flanked by trapeze-cut diamonds weighing approximately 3.00 carats, mounted in 18 karat gold and platinum, size 6. Estimate 400,000—600,000 USD. Lot Sold 482,500 USD

Accompanied by GIA report no. 11076633 stating Fancy Intense Yellow, Natural Color, VVS1 clarity.

Fancy Intense Yellow Diamond Ring.

The cut-cornered rectangular modified brilliant-cut diamond of fancy intense yellow color weighing 10.29 carats, flanked by triangular-shaped diamonds weighing approximately 1.65 carats, mounted in platinum and 18 karat gold, size 6¾. Estimate 160,000—180,000 USD. Lot Sold 254,500 USD

Accompanied by GIA report no. 2125065834 stating that the diamond is Fancy Intense Yellow, Natural Color, VVS2 clarity.

Fancy Yellow Diamond Ring

The cut-cornered rectangular modified brilliant-cut diamond of fancy yellow color weighing 9.07 carats, flanked by triangular-shaped brilliant-cut diamonds weighing approximately 2.00 carats, size 6¾.. Estimate 100,000—150,000 USD. Lot Sold 128,500 USD

Accompanied by GIA report no. 14928145 stating Fancy Yellow, Natural Color, VS2 clarity.

Fancy Yellow Diamond Ring

The cut-cornered rectangular modified brilliant-cut diamond of fancy yellow color weighing 9.10 carats, flanked by half-moon-shaped diamonds weighing approximately 1.15 carats, mounted in platinum and 18 karat gold, size 6. Estimate 80,000—100,000 USD. Lot Sold 116,500 USD

Accompanied by GIA report no. 16391448 stating that the diamond is Fancy Yellow, Natural Color, SI1 clarity.

Pair of Platinum, 18 Karat Gold and Fancy Intense Yellow Diamond Earrings

Set with pear-shaped diamonds of fancy intense yellow color weighing 1.25, 1.23, 1.10, 1.10, 1.07, 1.07, 1.02, and 1.01 carats, framed by small near colorless round diamonds. Estimate 55,000—75,000 USD. Lot Sold 86,500 USD

Accompanied by 8 GIA reports:

No. 2115587995 stating that the 1.25 carat diamond is Fancy Intense Yellow, Natural Color, VS1 clarity.

No. 1112277096 stating that the 1.23 carat diamond is Fancy Intense Yellow, Natural Color, SI1 clarity.

No. 5111613708 stating that the 1.10 carat diamond is Fancy Intense Yellow, Natural Color.

No. 2115588004 stating that the 1.10 carat diamond is Fancy Intense Yellow, Natural Color, VS2 clarity.

No. 2115450630 stating that the 1.07 carat diamond is Fancy Intense Yellow, Natural Color, VS1 clarity.

No. 1116488229 stating that the 1.07 carat diamond is Fancy Intense Yellow, Natural Color, VS1 clarity.

No. 17177622 stating that the 1.02 carat diamond is Fancy Intense Yellow, Natural Color.

No. 1102472155 stating that the 1.01 carat diamond is Fancy Intense Yellow, Natural Color.

Platinum and Fancy Brown-yellow Diamond Ring.

The round diamond of fancy brown-yellow color weighing 10.45 carats, framed by baguette near colorless diamonds weighing approximately 1.70 carats, size 6½.. Estimate 50,000—70,000 USD. Lot Sold 74,500 USD

Accompanied by GIA report no. 5121384737 stating Fancy Brown-Yellow, Natural Color, VS1 clarity.

Platinum and Fancy Yellow-Brown Diamond Ring, Bulgari, French

The emerald-cut diamond of fancy yellow-brown color weighing 8.59 carats, flanked by near colorless baguette diamonds, size 6¾, signed Bulgari, maker's mark, French assay mark. Estimate 40,000—60,000 USD. Lot Sold 64,900 USD

Accompanied by GIA report no. 10299293 (dated Feb 06, 1998) stating Fancy Yellow-Brown, Natural Color.

Yellow hue diamond and diamond necklace.

Round diamonds of yellow hue weighing approximately 12.00 carats, small round and baguette diamonds weighing a total of approximately 10.00 carats, mounted in platinum, length 15½ inches. Estimate 18,000—22,000 USD. Lot Sold 26,250 USD

Pair of yellow hue diamond and sapphire earclips, Tiffany & Co.

Round diamonds of yellow hue weighing approximately 5.00 carats, accented by round sapphires, mounted in 18 karat gold, signed Tiffany & Co. Estimate 20,000—30,000 USD. Lot Sold 25,000 USD

Fancy Yellow Diamond Ring.

The cushion modified brilliant-cut diamond of fancy yellow color weighing 2.84 carats, flanked by trapeze-cut near colorless diamonds weighing approximately .40 carat, mounted in 18 karat gold and platinum, size 5¼. Estimate 15,000—20,000 USD. Lot Sold 18,750 USD

Accompanied by GIA report no. 12796753 stating Fancy Yellow, Natural Color, VVS1 clarity.

Pair of 18 Karat Gold, Diamond and Colored Diamond Earrings.

Set with near colorless round diamonds and rose-cut diamonds of various hues weighing a total of approximately 17.65 carats. Estimate 10,000—15,000 USD. Lot Sold 12,500 USD

Sotheby's. Important Jewels. 28 Sep 10. New York www.sothebys.com