12 décembre 2015

The Big Sky Sapphire. Unmounted Montana Sapphire

The Big Sky Sapphire. Unmounted 12.54 carats Montana Sapphire. Estimate 300,000 — 500,000 USD. Lot sold 394,000 USD. Photo Sotheby's The unmounted cushion-cut sapphire weighing 12.54 carats. With fitted box. Notes: Accompanied by GIA report no. 6173139524 stating that the sapphire is of USA (Montana) origin, with no indications of heating. The Big Sky Sapphire is accompanied by a GIA Monograph. The beauty of gemstones begins with their subtle nuance of color: the red of a ruby is not... [Lire la suite]
Posté par Alain Truong à 19:46 - - Commentaires [0] - Permalien [#]
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04 décembre 2015

Christie's New York announces Magnificent Jewels: The Auction

Photo Christie's Image Ltd 2015 NEW YORK, NY.- Christie’s announced its upcoming schedule of Winter Jewelry sales in New York, starting with the live saleroom auction of Magnificent Jewels on December 10, and continuing with a companion online boutique of Holiday Jewels from December 11 – 21. Both venues offer a multitude of outstanding jewels at every price level, including fancy colored and colorless diamonds, rare gemstones, natural pearls, and signed creations from the most coveted jewelry houses. Auction highlights,... [Lire la suite]
15 octobre 2015

A diamond ring, by Van Cleef & Arpels and a sapphire and diamond ring

A 6.46 carats Type IIa diamond ring, by Van Cleef & Arpels (Estimate $350,000 – $450,000) and A 20.97 carats Burma sapphire and diamond ring Estimate $150,000 – $200,000. Photo Christie's Image Ltd 2015 A 6.46 carats Type IIa diamond ring, by Van Cleef & Arpels. Estimate $350,000 – $450,000. Photo Christie's Image Ltd 2015 Set with an oval brilliant-cut diamond, weighing approximately 6.46 carats, flanked on either side by a pear-shaped diamond, ring size 6 1/2,... [Lire la suite]
18 avril 2015

Platinum, Sapphire and Diamond Ring, Carvin French & Platinum, Emerald and Diamond Ring, Tiffany & Co., circa 1925

  Platinum, Sapphire and Diamond Ring, Carvin French & Platinum, Emerald and Diamond Ring, Tiffany & Co. Photo courtesy Sotheby's Platinum, Kashmir Sapphire and Diamond Ring, Carvin French. Estimate 275,000 — 325,000 USD (249,934 - 295,377 EUR). Photo courtesy Sotheby's.  Centering a cushion-cut sapphire weighing 5.80 carats, flanked by tapered baguette diamonds weighing approximately .60 carat, size 6, with maker's mark.  Accompanied by AGL report no. CS 63492 stating that the sapphire... [Lire la suite]
11 avril 2015

A fine sapphire and diamond pendant necklace

A fine Ceylon  sapphire and diamond pendant necklace. Estimate $200,000 – $300,000. Photo Christie's Image Ltd 2015. Suspending a detachable pendant, set with a cushion-cut sapphire, weighing approximately 17.05 carats, trimmed with cut-cornered square-cut diamonds, one weighing approximately 0.99 carat, from a line set with baguette-cut diamonds and a square-cut diamond, weighing approximately 2.08 carats, to the neckchain, set with a circular-cut sapphire and a series of graduated oval-cut sapphires, spaced by... [Lire la suite]
11 avril 2015

A sapphire and diamond ring

A 27.17 carats cushion-cut Ceylon  sapphire and diamond ring. Estimate $250,000 – $350,000. Photo Christie's Image Ltd 2015. Set with a cushion-cut sapphire, weighing approximately 27.17 carats, trimmed with fourteen circular-cut diamonds, each weighing approximately 0.33 to 0.30 carat, mounted in platinum With report CS 39427 dated 29 January 2008 from the American Gemological Laboratory stating that it is the opinion of the Laboratory that the origin of this sapphire would be classified as Ceylon... [Lire la suite]
Posté par Alain Truong à 16:18 - - Commentaires [0] - Permalien [#]
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10 avril 2015

A three-stone sapphire and diamond ring

A three-stone 4.55 carats Kashmir sapphire and diamond ring. Estimate $330,000 – $400,000. Photo Christie's Image Ltd 2015 Set with a cushion-cut sapphire, weighing approximately 4.55 carats, flanked on either side by a modified cushion-cut diamond, weighing approximately 1.55 and 1.50 carats, mounted in platinum. With report 14037214 dated 5 March 2014 from the Gübelin Gem Lab stating that gemmological testing revealed characteristics consistent with those of sapphires originating from Kashmir. No indications... [Lire la suite]
07 avril 2015

An important sapphire and diamond ring

An important 20.10 carats cushion-cut Burma  sapphire and diamond ring. Estimate $380,000 – $450,000. Photo Christie's Image Ltd 2015 Set with a cushion-cut sapphire, weighing approximately 20.10 carats, to the circular-cut diamond gallery and half-hoop, mounted in platinum With report 77388 dated 11 November 2014 from the SSEF Swiss Gemmological Institute stating that the origin of this sapphire is Burma (Myanmar). No indications of heatingWith report 14097127 dated 15 September 2014 from the Gübelin Gem... [Lire la suite]
Posté par Alain Truong à 23:08 - - Commentaires [0] - Permalien [#]
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18 juillet 2014

An antique sapphire and diamond pendant

An antique sapphire and diamond pendant. Photo Christie's Image Ltd 2007 Set with a cushion-cut sapphire, weighing approximately 22.66 carats, within an old European-cut diamond surround, mounted in gold, circa 1886. Estimate $250,000 - $350,000. Price Realized $3,064,000 With report 0702554 dated 20 February 2007 from the Gübelin Gemmological Laboratory stating that gemmological testing revealed characteristics consistent with those of sapphires originating from Kashmir. No indications of heating Accompanied by an appendix... [Lire la suite]
07 juillet 2014

A rare unmounted cushion-cut sapphire

A rare unmounted cushion-cut sapphire. Photo Christie's Image Ltd 2004 Weighing approximately 19.45 carats Price Realized $601,100 With report CS 36993 dated 12 May 2004 from the American Gemological Laboratories stating that based on available gemological information, it is the opinion of the Laboratory that the origin of this material would be classified as Classic Kashmir. Heat Enhancement: None. Clarity Enhancement: NoneR Christie's. MAGNIFICENT JEWELS, 12 October 2004, New York, Rockefeller... [Lire la suite]
Posté par Alain Truong à 19:20 - - Commentaires [0] - Permalien [#]
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