24 avril 2015

Ten jewelry of René Boivin at Sotheby's, Geneva, 12 May 2015

  Rock crystal and hematite bracelet, 'Escalier Bordé', René Boivin, 1930. Estimate 49,000 — 69,000 CHF (46,226 - 65,094 EUR). Photo Sotheby's. Designed as an articulated band of tiered square rock crystal plaques, set between rows of pyramidal hematite motifs, length approximately 190mm, French assay mark, inscribed Jacques à Betty, Déc 1930, case stamped Boivin.  Accompanied by a certificate from Françoise Cailles. Literature: Cf: Françoise... [Lire la suite]

10 avril 2015

Magnificent jewels at Christie’s Geneva on May 13

Photo Christie's Image Ltd 2015. GENEVA – Christie’s announces highlights of its May 13 auction of Magnificent Jewels in Geneva. The sale is led by the historically important Maria Christina Royal Devant-de-Corsage brooch, which was presented as a wedding gift from King Alfonso XII of Spain to his wife, the Archduchess Maria Christina of Austria in November 1879 (illustrated above). The auction will showcase over 351 spectacular jewels and among the highlights of the important colourless and coloured... [Lire la suite]
10 avril 2015

A sapphire and diamond necklace, by Van Cleef & Arpels

A cushion and oval-cut Cambodia, Kashmir and Burma sapphire and diamond necklace, by Van Cleef & Arpels. Estimate $300,000 – $500,000. Photo Christie's Image Ltd 2015 Designed as a graduated series of eleven cushion and oval-cut sapphires and circular-cut diamond clusters, centering upon a cushion-cut sapphire, weighing approximately 7.02 carats, spaced by marquise and circular-cut diamond links to the marquise and circular-cut diamond backchain, mounted in platinum, 14½ ins., may also be worn as... [Lire la suite]
07 avril 2015

A sapphire and diamond necklace

A Ceylon cushion and oval-cut sapphire and diamond necklace. Estimate $375,000 – $475,000. Photo Christie's Image Ltd 2015 Designed as a graduated series of nine cushion and oval-cut sapphires, weighing from approximately 26.86 to 4.71 carats, each within a two-row circular-cut diamond surround, to the circular-cut diamond backchain, mounted in platinum, 17 ins. With report CS 66153 dated 13 February 2015 from the American Gemological Laboratories stating that it is the opinion of the Laboratory that the... [Lire la suite]
23 mars 2015

Sapphire and Diamond Ring

7.03 carats Kashmir Sapphire and Diamond Ring. Estimate 3,300,000 — 3,800,000 HKD (371,771 - 428,100 EUR). Photo Sotheby's Centring on a cushion-shaped sapphire weighing 7.03 carats, surrounded by heart- and marquise-shaped diamonds, to shoulders set with circular-cut diamonds, the diamonds together weighing approximately 7.25 carats, mounted in 18 karat white gold. Ring size: 5¾ Acompanied by AGL and SSEF reports numbered CS 45261 and 78680, dated 29 June... [Lire la suite]
23 mars 2015

Fine Sapphire and Diamond Ring

Fine 11.21 carats Kashmir  Sapphire and Diamond Ring. Estimate 12,000,000 — 15,000,000 HKD (1,351,896 - 1,689,870 EUR). Photo Sotheby's Centring on a cushion-shaped sapphire weighing 11.21 carats, flanked on each side by a shield-shaped diamond, the shank set throughout with circular-cut diamonds, the diamonds together weighing approximately 1.20 carats, mounted in platinum. Ring size: 6  Accompanied by Gübelin and AGL reports numbered 0907572 and CS 40052, dated 2... [Lire la suite]


16 mars 2015

Back on the Collection of Barbara Taylor Bradford at Bonhams, 5 Dec 2013

A magnificent 14.07 carats diamond single-stone ring, by David Morris. Estimated £330,000-£460,000. Sold for £446,500 (€626,139). Photo Bonhams The cushion-shaped diamond, weighing 14.07 carats, within an architectural scrolling mount of brilliant-cut diamonds in micro-pavé settings, signed David Morris, ring size O, maker's case Accompanied by a report from GIA stating that the diamond is G colour, VS1 clarity. Report number 1152466968, dated 21 May 2013. "'When you wear this, you don't need any other... [Lire la suite]
14 juin 2014

Important sapphire and diamond ring

Important sapphire and diamond ring. Photo Tiancheng International. Set with a cushion-shaped sapphire weighing 30.91 carats, to a stylised basket set with brilliant-cut and pear-shaped diamonds, highlighted to the shank with circular-cut sapphires, the diamonds together weighing approximately 2.25 carats, mounted in 18 karat white and yellow gold. Ring size: 6 ¾. Estimate: HK$7,000,000 - 8,000,000 (US$900,000 - 1,030,000). Sold for HK$8,260,000 Accompanied by SSEF report numbered 69182, dated 18 July 2013, stating that the... [Lire la suite]
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14 juin 2014

Fine Royal-Blue coloured sapphire and diamond ring

Fine Royal-Blue coloured sapphire and diamond ring. Photo Tiancheng International. Centring on a cushion-shaped sapphire weighing 9.55 carats, to the shoulders set with calibré- and single-cut diamonds, the diamonds together weighing approximately 3.75 carats, mounted in platinum. Ring size: 5½. Estimate: HK$1,900,000 - 2,300,000 (US$245,000 - 295,000). Sold for HK$2,242,000 Accompanied by Gubélin report numbered 11037036, dated 16 March 2011, stating that the 9.55 carat sapphire is natural, Blue colour, of Burmese origin, with no... [Lire la suite]
27 mai 2014

A superb sapphire and diamond ring

  A superb sapphire and diamond ring. Photo Christie's Image Ltd 2014 Set with a cushion-shaped sapphire weighing approximately 16.45 carats, flanked by rectangular and baguette-cut diamonds, mounted in platinum and 18k white gold, ring size 5¼. Estimate HK$4,800,000 – HK$6,500,000 ($621,805 - $842,028). Unsold Accompanied by report no. 73385 dated 11 March 2014 from the SSEF Swiss Gemmological Institute stating that the approximately 16.00 carat sapphire is of Burma (Myanmar) origin, with no indications of... [Lire la suite]