20 septembre 2018

A padparadscha sapphire and diamond ring, Oscar Heyman

Lot 40. A Ceylon padparadscha sapphire and diamond ring, Oscar Heyman. Estimate US$ 60,000 - 80,000 (€ 51,000 - 69,000). Unsold. © Bonhams 2001-2018 centering an oval-shaped modified mixed-cut padparadscha sapphire, weighing 6.43 carats, within an oval-shaped diamond surround; with maker's mark, no.98580; estimated total diamond weight: 1.30 carats; mounted in platinum and 18k gold; size 5 1/4. Accompanied by AGL report # CS 50253, dated June 19, 2012, stating the padparadscha sapphire as: Ceylon... [Lire la suite]
Posté par Alain Truong à 17:34 - - Commentaires [0] - Permalien [#]
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20 septembre 2018

A diamond necklace, Oscar Heyman, 1968

Lot 190. A diamond necklace, Oscar Heyman, 1968. Estimate US$ 80,000 - 100,000 (€ 69,000 - 86,000). Sold for US$ 112,500 (€ 95,671). © Bonhams 2001-2018 designed as a graduated cluster set with marquise, pear and round brilliant-cut diamonds;with maker's mark, no.85560; total diamond weight: 54.25 carats; mounted in platinum; length: 16in. Accompanied by a certificate of authenticity from Oscar Heyman, dated April 17th, 2018. Bonhams. FINE JEWELLERY, 21 Sep 2018, 11:00 EDT, NEW YORK
Posté par Alain Truong à 15:50 - - Commentaires [0] - Permalien [#]
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08 septembre 2017

A sapphire and diamond clip brooch, Oscar Heyman, 1955

Lot 180. A 13.03 carats Ceylon sapphire and diamond clip brooch, Oscar Heyman, 1955. Estimate US$ 30,000 - 50,000 (€25,000 - 41,000). Photo: Bonhams. centering a rectangular-shaped emerald-cut sapphire, weighing 13.03 carats, set within a radiating spray of tapered baguette and round brilliant-cut diamonds;unsigned, no.96117; estimated total diamond weight: 5.50 carats; mounted in platinum; length: 1 1/2in. Note: Accompanied by AGL report # 1082987, dated April 11, 2017, stating the sapphire as:... [Lire la suite]
Posté par Alain Truong à 19:43 - - Commentaires [0] - Permalien [#]
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08 septembre 2017

A sapphire and diamond ring, Oscar Heyman, 1946

Lot 62. A 9.25 carats Ceylon sapphire and diamond ring, Oscar Heyman, 1946. Estimate US$ 30,000 - 50,000 (€25,000 - 41,000). Photo: Bonhams. of floral cluster design, centering a cut-cornered square-shaped sapphire, weighing approximately 9.25 carats, adorned with round brilliant-cut diamonds, enhanced on either side with triangular-shaped diamonds; estimated total diamond weight: 2.15 carats; mounted in platinum; size 5 Note: Accompanied by AGL report # 1085230, dated July 12, 2017, stating the... [Lire la suite]
Posté par Alain Truong à 19:31 - - Commentaires [0] - Permalien [#]
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17 novembre 2013

A sapphire and diamond brooch, by Oscar Heyman

A sapphire and diamond brooch, by Oscar Heyman. Photo courtesy Bonhams. Of snowflake design, set with square-cut sapphires, within an openwork surround of brilliant-cut diamonds and circular-cut sapphires, diamonds approximately 1.40 carats total, sapphires approximately 27.50 carats total, length 4.2cm. Estimate HK$ 63,000 - 80,000 (€6,000 - 7,700) Bonhams. FINE JEWELLERY & JADEITE. Hong Kong. 23 Nov 2013 14:00 CST
Posté par Alain Truong à 19:50 - - Commentaires [0] - Permalien [#]
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15 novembre 2013

An impressive art deco sapphire, diamond and coloured diamond bracelet, by Oscar Heyman, circa 1940

An impressive art deco sapphire, diamond and coloured diamond bracelet, by Oscar Heyman, circa 1940. Photo courtesy Bonhams The central oval-cut sapphire wrapped within a twirling ribbon pavé-set with brilliant and baguette-cut diamonds, issuing opposing bursts of variously-cut diamonds of yellow tint and fancy-cut sapphires highlighted with brilliant and baguette-cut diamonds, the openwork strap of geometric design set with similarly cut diamonds, diamonds approximately 15.95 carats total, sapphires approximately 30.00... [Lire la suite]
Posté par Alain Truong à 22:17 - - Commentaires [0] - Permalien [#]
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24 octobre 2013

An impressive art deco sapphire, diamond and coloured diamond bracelet, by Oscar Heyman, circa 1940

An impressive art deco sapphire, diamond and coloured diamond bracelet, by Oscar Heyman, circa 1940. Photo courtesy Bonhams. The central oval-cut sapphire wrapped within a twirling ribbon pavé-set with brilliant and baguette-cut diamonds, issuing opposing bursts of variously-cut diamonds of yellow tint and fancy-cut sapphires highlighted with brilliant and baguette-cut diamonds, the openwork strap of geometric design set with similarly cut diamonds, diamonds approximately 15.95 carats total, sapphires approximately 30.00... [Lire la suite]
08 juin 2013

Oscar Heyman Multicolored Gemstone and Diamond Necklace

Oscar Heyman Multicolored Gemstone and Diamond Necklace
Posté par Alain Truong à 22:51 - - Commentaires [0] - Permalien [#]
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08 juin 2013

43-carat internally flawless yellow diamond at Oscar Heyman.

43-carat internally flawless yellow diamond at Oscar Heyman.
Posté par Alain Truong à 22:27 - - Commentaires [0] - Permalien [#]
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08 juin 2013

Oscar Heyman's opals

Oscar Heyman Gold, platinum, opal and diamond brooch. Oscar Heyman Platinum Lightning Ridge opal, emerald bead & diamond necklace.  Oscar Heyman platinum, opal and diamond earrings. Oscar Heyman gold, platinum, fancy yellow diamond, diamond and opal bracelet. Oscar Heyman gold, platinum, yellow diamond, diamond and fire opal ring.
Posté par Alain Truong à 22:25 - - Commentaires [0] - Permalien [#]
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