Ruby jewelry @ Sotheby's, New York

Platinum, Ruby and Diamond Necklace, France. photo courtesy Sotheby's

Set with oval and cushion-shaped rubies weighing approximately 40.00 carats, accented by round, old European-cut and baguette diamonds weighing a total of approximately 20.75 carats, length 17 inches, French assay marks. Estimate 70,000—90,000 USD. Lot Sold 86,500 USD

Platinum, Ruby and Diamond Bracelet. photo courtesy Sotheby's

Set with oval rubies weighing approximately 50.00 carats, accented by baguette diamonds weighing approximately 6.50 carats, length 7¼ inches, numbered 2289. Estimate 35,000—45,000 USD. Lot Sold 42,500 USD

18 Karat Gold, Ruby and Diamond Necklace and Earclips. photo courtesy Sotheby's

The necklace and earclips set with heart-shaped rubies weighing approximately 25.00 carats, framed by round diamonds weighing approximately 16.50 carats, length of necklace 15 inches. Estimate 12,000—15,000 USD. Lot Sold 32,500 USD

Pair of Platinum, Ruby and Diamond Pendant-Earrings. photo courtesy Sotheby's

The pear-shaped rubies weighing 4.01 and 3.51 carats, further set with tapered baguette and French-cut diamonds weighing approximately 2.20 carats. Estimate 25,000—35,000 USD. Lot Sold 31,250 USD

Accompanied by GIA report no. 2115610274 stating that the rubies are of Burmese origin, no indications of heating.

18 Karat Gold, Ruby and Diamond Bracelet. photo courtesy Sotheby's

Of lattice design set with emerald-cut rubies weighing 47.51 carats, and round diamonds weighing approximately 13.50 carats, length 7 inches. Estimate 25,000—35,000 USD. Lot Sold 31,250 USD

Accompanied by AGL report no. CS 41454 stating that the rubies are of Burmese origin, Mong Hsu Type, enhancement: heat.

Unmounted Ruby. photo courtesy Sotheby's

The cushion-shaped ruby weighing 2.08 carats.- Estimate 8,000—10,000 USD. Lot Sold 23,750 USD

Accompanied by AGTA report no. 93008412 stating that the ruby is of Burmese origin, no indications of heating.

Platinum, Ruby and Diamond Ring, Circa 1915. photo courtesy Sotheby's

Set with a cushion-shaped ruby weighing approximately 2.35 carats, and an old mine diamond weighing approximately 3.20 carats, flanked by small old mine diamonds weighing approximately .10 carat, size 6¾. Estimate 10,000—15,000 USD. Lot Sold 18,750 USD

18 Karat Gold, Ruby Bead and Diamond Necklace. photo courtesy Sotheby's

The double-strands composed of ruby beads measuring approximately 24.0 to 9.4 mm., the clasp set with emerald-cut rubies, and round diamonds weighing approximately 2.40 carats, length 17 inches. Estimate 7,000—10,000 USD. Lot Sold 17,500 USD

Gold, Ruby and Diamond Torsade Bracelet. photo courtesy Sotheby's

Composed of multiple strands of ruby beads measuring approximately 3.5 mm., the clasp set with round diamonds weighing approximately .40 carat, and round rubies, length 8 inches. Estimate 8,000—12,000 USD. Lot Sold 16,250 USD

Ruby and diamond dragonfly pendant-brooch, Trio. photo courtesy Sotheby's

Set with round diamonds weighing approximately 7.35 carats, additionally set with oval and pear-shaped rose-cut rubies, mounted in 18 karat white and yellow gold, signed Trio. Estimate 10,000—15,000 USD. Lot Sold 12,500 USD

Pair of 18 Karat Gold, Ruby, Diamond and Colored Diamond Earclips. photo courtesy Sotheby's

Set with oval rubies, fancy-cut near colorless diamonds weighing approximately 3.80 carats, and marquise-shaped diamonds of yellow hue weighing approximately 1.00 carat, mounted in 18 karat white and yellow gold, with retractable posts. Estimate 7,500—10,000 USD. Lot Sold 10,625 USD

18 Karat Gold, Ruby and Diamond Ring, Henry Dunay. photo courtesy Sotheby's

Set with an oval ruby, framed by round diamonds weighing approximately 1.90 carats, size 6¼, signed Dunay, numbered B2264, maker's mark for Dunay. Estimate 6,000—8,000 USD. Lot Sold 10,625 USD

18 Karat Gold, Ruby and Diamond Ring. photo courtesy Sotheby's

The heart-shaped ruby weighing approximately 3.40 carats, framed by round diamonds weighing approximately 2.45 carats, size 6½. Estimate 5,000—7,000 USD. Lot Sold 8,125 USD

Platinum, Ruby and Diamond Ring. photo courtesy Sotheby's

Invisibly-set with calibré-cut rubies, set diagonally with round diamonds, size 7¼, maker's mark, three rubies missing. Estimate 7,500—10,000 USD. Lot Sold 7,500 USD

Platinum, Star Ruby and Diamond Ring. photo courtesy Sotheby's

The cabochon star ruby measuring approximately 13.0 by 11.1 by 10.2 mm., framed by round and marquise-shaped diamonds weighing approximately 1.85 carats, size 5. Estimate 6,000—8,000 USD. Lot Sold 7,500 USD

Pair of 18 Karat Gold, Ruby and Diamond Leaf Earclips, Chiappe. photo courtesy Sotheby's

Set with oval rubies weighing approximately 22.00 carats, accented by round diamonds weighing approximately 3.90 carats, French assay marks, with retractable posts. Estimate 6,000—8,000 USD. Lot Sold 7,500 USD

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