21 avril 2012

Collector gamstone: Cuprite - 24.49 ct

Collector gamstone: Cuprite - 24.49 ct. Emke Mine, Onganga (Onganja), Seeis, Windhoek District, Khomas Region, Namibia.  photo Heritage Auctions Cuprite is a minor ore of copper, known for its distinctive red color - hence its nickname Ruby Copper. Mostly known to mineral collectors, it wasn't until the Namibian discovery in the 1970s that material large and transparent enough to facet, transformed this mineral into a rare gemstone. Virtually all of the gem Cuprite in the world has come from this singular... [Lire la suite]
Posté par Alain Truong à 17:29 - - Commentaires [0] - Permalien [#]

29 mars 2012

VAN CLEEF & ARPELS. Bague «Serti mystérieux»

VAN CLEEF & ARPELS. Bague «Serti mystérieux». Photo GROS & DELETTREZ en or jaune ornée de rubis en serti mystérieux. Signée Van Cleef & Arpels n° 5092. Poids 9,5 g. Estimation : 12 000 - 15 000 € GROS & DELETTREZ. MERCREDI 11 AVRIL À 14H00. DROUOT RICHELIEU SALLE 3. EMAIL : CONTACT@GROS-DELETTREZ.COM - TÉL. : 01 47 70 83 04
Posté par Alain Truong à 16:54 - - Commentaires [0] - Permalien [#]
17 avril 2011

Ruby, Rubellite & Red spinel @ Sotheby's.. Magnificent Jewels and Jadeite, 06 Apr 11, Hong Kong

Fine ruby and diamond ring. Photo Sotheby's Centring on an oval ruby weighing 6.01 carats, surrounded by marquise-shaped diamonds together weighing approximately 2.50 carats, highlighted by circular-cut yellow diamonds, mounted in 18 karat white and yellow gold. Estimate 4,700,000—6,000,000 HKD. Lot Sold 5,660,000 HKD Ring size: 5¾ Accompanied by Gübelin report numbered 0706528, dated 29 June 2007, stating that the 6.01 carat ruby is natural, of Burmese (Myanmar) origin, with no indications of heating. This colour variety of... [Lire la suite]
Posté par Alain Truong à 08:52 - - Commentaires [0] - Permalien [#]
02 janvier 2011

Rubellite and Diamond jewelry @ Sotheby's. Magnificent Jewels, 09 Dec 10, New York

18 Karat White Gold, Rubellite and Diamond Necklace, Michele della Valle. photo Sotheby's The articulated graduated necklace set with cushion-shaped rubellites weighing a total of 274.33 carats, accented by small round diamonds weighing 28.34 carats, length 15 inches, signed Michele della Valle, numbered 100746. Est. 90,000—120,000 USD. Lot Sold 128,500 USD Pair of 18 Karat White Gold, Rubellite and Diamond Pendant-Earclips, Michele della Valle. photo Sotheby's The tops designed as clusters set with... [Lire la suite]
Posté par Alain Truong à 18:21 - - Commentaires [0] - Permalien [#]
20 octobre 2010

Barbie, by Stefano Canturi, featuring a colored diamond

Barbie, by Stefano Canturi, featuring a colored diamond. Photo: Christie's Images Ltd., 2010 Her blonde hair styled in an updo, wearing an openwork variously-cut diamond collar necklace, centering upon a cut-cornered modified square-cut  fancy vivid purplish pink diamond, weighing approximately 1.00 carat, and a diamond ring, to her black strapless party dress and pink peep-toe stilettos. Designed by Stefano Canturi - Estimate $300,000 - $500,000 With report 15724773 dated 21 March 2007 from the Gemological Institute... [Lire la suite]
Posté par Alain Truong à 23:01 - - Commentaires [0] - Permalien [#]
20 octobre 2010

Van Cleef & Arpels "mystery set" ruby and diamond jewelry

A "mystery set" ruby and diamond "Pavot" flower brooch, by Van Cleef & Arpels. Photo: Christie's Images Ltd., 2010 Designed as a calibré-cut ruby flower, centering upon a circular-cut diamond cluster pistil, extending a baguette-cut diamond stem and marquise-cut diamond leaves, mounted in platinum, 1974, in a Van Cleef & Arpels navy blue suede case. Signed V.C.A. for Van Cleef & Arpels, N.Y., no. 44480 - Estimate $200,000 - $300,000. Price Realized $350,500 Notes: Cf. Paris Galleria, Van Cleef... [Lire la suite]
Posté par Alain Truong à 23:00 - - Commentaires [0] - Permalien [#]

04 octobre 2010

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... [Lire la suite]
Posté par Alain Truong à 23:29 - - Commentaires [0] - Permalien [#]
18 septembre 2010

Platinum, Diamond and Mexican Opal Brooch

Platinum, Diamond and Mexican Opal Brooch.. Photo: Courtesy Doyle New York  One fire opal ap. .95 ct., 74 diamonds ap. 2.70 cts., c. 1920, ap. 6.7 dwt. Estimate $2,000-3,000 Doyle New York. Important Estate Jewelry - Wednesday, September 29 at 10am www.doylenewyork.com
Posté par Alain Truong à 16:40 - - Commentaires [0] - Permalien [#]
25 juillet 2010

Bouquet de baies rouges

Bouquet de baies rouges. photo Kohn - Cannes Pierres dures et cristal. P. B : 99,9 gr - Estimation : 2 000 / 3 000 € Kohn - Cannes. Vente du Mardi 3 août 2010. Mme Valérie GABARD, Expert. Hotel Intercontinental Carlton - 58, La Croisette - BP 155 - 06414 Cannes Cedex. Pour tous renseignements, veuillez contacter la maison de ventes au +33 (0) 1 44 18 73 00
Posté par Alain Truong à 21:17 - - Commentaires [0] - Permalien [#]
18 juillet 2010

Rubis @ Artcurial - Briest-Poulain-F.Tajan

Rare bague en or gris, ornée d'un rubis pourpre, ovale épaulé de deux diamants poires et de diamants taillés en brillant. photo Artcurial - Briest-Poulain-F.Tajan Poids du rubis : 10,86 carats accompagné d'un certificat du S.S.E.F indiquant couleur purplish red of medium strong saturation, et léger traitement thermique avec légères traces résiduelles dans les fissures. Poids brut : 11 g - Estimation : 40 000 / 50 000 € A RARE PURPLISH RED RUBY, DIAMOND AND GOLD RING, ACCOMPANIED BY A SSEF CERTIFICATE STATING THAT THE 10,86... [Lire la suite]
Posté par Alain Truong à 11:47 - - Commentaires [0] - Permalien [#]