Oscar Heyman Brothers

Lot 248. Platinum, Sapphire and Diamond Bracelet, Oscar Heyman & Brothers. Estimate 75,000 — 100,000 USD. Photo: Sotheby's. Set with five oval-shaped and cushion-cut sapphires weighing approximately 44.00 carats, accented by old European-cut diamonds weighing approximately 6.00 carats, further set with calibré-cut sapphires, length 7 1/8 inches, numbered 28599, with maker's mark. With signed box. Accompanied by a photocopy of the sketch by Oscar Heyman & Brothers.  Sketch. ... [Lire la suite]

18 karat gold, platinum, invisibly-set ruby and diamond flower brooch, Oscar Heyman & Brothers. Photo Sotheby's Of floral design, the petals set with numerous invisibly-set rubies weighing approximately 109.80 carats, centering round diamonds weighing 3.88 carats, the stem set with baguette and trapeze-cut diamonds weighing 1.55 carats, numbered 200671, with maker's mark; stem is removable. Estimation 150,000 — 200,000 USD Sotheby's. Magnificent Jewels, New York | 29 avr. 2014 - www.sothebys.com

A diamond and ruby flower brooch, by Oscar Heyman & Brothers. Photo: Christie's Images Ltd 2014 Designed as a flower blossom with circular-cut ruby and diamond petals, to the baguette-cut diamond stem and marquise-cut diamond leaves, mounted in platinum. Estimate: $6,000 – $8,000 With maker's mark for Oscar Heyman & Brothers, no. 71118 Christie's. MAGNIFICENT JEWELS, 16 April 2014, New York, Rockefeller Plaza - www.christies.com

Sapphire and diamond ring, Oscar Heyman & Brothers,  circa 1950 The modified rectangular panel set with 6 calf's-head cut sapphires weighing approximately 12.00 carats, framing a square emerald-cut sapphire weighing approximately 6.75 carats, quartered by clusters of 14 small round diamonds weighing approximately 1.00 carat, mounted in platinum, numbered 50169. Estimate 5,000—7,000 USD Sotheby's. Important Jewels. 04 Feb 09. New York www.sothebys.com photo courtesy Sotheby's

17.84 carats sapphire and diamond ring, Oscar Heyman & Brothers Claw-set with a cushion-shaped sapphire weighing 17.84 carats, within a line of pear-shaped diamonds, further decorated with brilliant-cut stones, mounted in yellow gold and platinum, numbered. size 49, with ring sizer. Estimate 100,000—165,000 CHF - Unsold. Accompanied by AGTA report no. 91001911 stating that the sapphire is of Burmese origin, with no indications of heating. Accompanied by Certificate of Authenticity from Oscar Heyman & Brothers ... [Lire la suite]

Pink sapphire and diamond ring, Oscar Heyman & Brothers Set at the centre with a cushion-shaped pink sapphire between shield-shaped diamonds, within a border of square-, calibré-cut and baguette diamonds, further decorated with similarly cut pink sapphires, the shoulders set with tapered baguette and baguette diamonds, mounted in platinum, numbered, original drawing not included in the sale of this lot. size 49, ring sizer, Estimate 130,000—180,000 CHF - Lot Sold 290,500 CHF Sotheby's. Magnificent Jewels. 19 Nov 08.... [Lire la suite]