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Ambre baltique de 4,62 carats contenant un moustique, par Desmond Chan

Un moustique, parfaitement préservé, figé dans l’ambre depuis des millions d’années… mais ici, la rareté atteint un autre niveau. Cet ambre baltique de 4,62 carats est taillé en facettes, en taille émeraude, encadrant l’insecte comme une œuvre d’art signée...

Posté par Alain Truong à 20:45 - Commentaires […] - Permalien [#]

Tags: Gemmes & Gemmologie, Desmond Chan, Ambre baltique

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20 février 2025

Smithsonian acquires one of the world's largest "Fancy Red" Diamonds

The Winston Red Diamond, an exquisite 2.33 carat Fancy red diamond - one of the finest in the world. Photo by Robert Weldon, courtesy of Ronald Winston. WASHINGTON, DC.- The Smithsonian’s National Museum of Natural History will unveil the Winston Red...

Posté par Alain Truong à 14:21 - Commentaires […] - Permalien [#]

Tags: Gemmes & Gemmologie, The Winston Red Diamond

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26 avril 2023

Large and Rare Non-nacreous Melo Pearl, Melo melo volutidae, Saltwaters near Vietnam

Lot 3479. Large and Rare Non-nacreous Melo Pearl, Melo melo volutidae, Saltwaters near Vietnam. Weighing approximately 36.29 carats and measuring 16.8mm. Sold for US$30,500. © Bonhams Relatively unknown in the West, even George Kunz's compendium of 1908,...

Posté par Alain Truong à 21:34 - Commentaires […] - Permalien [#]

Tags: Melo pearl, Melo melo volutidae, Saltwaters near Vietnam

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26 avril 2023

Large Orange Non-Nacreous Pearl--"Melo Pearl", Melo melo volutidae, Saltwaters near Vietnam

Lot 3124. Large Orange Non-Nacreous Pearl--"Melo Pearl", Melo melo volutidae, Saltwaters near Vietnam. Weighing approximately 24.54 carats and measuring 16.60 x 11.65mm. Sold for US$31,875. © Bonhams 2001- 2023 Relatively unknown in the West, even George...

Posté par Alain Truong à 20:57 - Commentaires […] - Permalien [#]

Tags: Melo pearl, Saltwaters near Vietnam

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26 avril 2023

Non-nacreous Saltwater Orange Pearl--"Melo Pearl", Melo melo, Saltwaters near Vietnam

Lot 181. Non-nacreous Saltwater Orange Pearl--"Melo Pearl", Melo melo, Saltwaters near Vietnam. Weighing approximately 13.45 carats and measuring 12.26 x 11.84mm. Estimate US$14,000 - US$18,000 . © Bonhams 2001- 2023 Relatively unknown in the West, even...

Posté par Alain Truong à 19:49 - Commentaires […] - Permalien [#]

Tags: Melo pearl, Saltwaters near Vietnam

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19 août 2022

Bonhams Presents Two Online Sales Featuring Gemstones and Mineral Decor

Los Angeles – This month Bonhams Natural History department will present two distinct online sales, The Zen Garden: Mineral Decor for the Home and Garden, August 19 – 30, and Gemstones and Exotic Gemstone Jewelry, August 19 – 29. With more than 200 lots...

Posté par Alain Truong à 22:31 - Commentaires […] - Permalien [#]

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8 juin 2020

Crystal Opal with Multi-Color Fire, Lightning Ridge, New South Wales, Australia

Lot 51. 21.77 carats Crystal Opal with Multi-Color Fire, Lightning Ridge, New South Wales, Australia. Estimate US$ 35,000 - 45,000 (€ 35,000 - 44,000). © Bonhams A large oval cabochon crystal opal with slight potch to the underside having a rolling flash...

Posté par Alain Truong à 19:01 - Commentaires […] - Permalien [#]

Tags: Australia, opal, Lightning Ridge, New South Wales

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8 juin 2020

Stunning Large Blue Green Opal, Lighting Ridge, New South Wales, Australia

Lot 52. 26.01 carats Stunning Large Blue Green Opal, Lighting Ridge, New South Wales, Australia. Estimate US$ 40,000 - 50,000 (€ 35,000 - 44,000). © Bonhams A large and impressive "nobby" opal (nodule) with a black base color and a vivid broad rolling...

Posté par Alain Truong à 18:55 - Commentaires […] - Permalien [#]

Tags: Australia, New South Wales, Blue Green Opal, Lighting Ridge

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8 juin 2020

Black Opal with "Grass" Pattern, Lightning Ridge, New South Wales, Australia

Lot 53. 26.01 carats Black Opal with "Grass" Pattern, Lightning Ridge, New South Wales, Australia. Estimate US$ 45,000 - 55,000 (€ 40,000 - 49,000). © Bonhams A large and impressive "nobby" opal (nodule) with a black base color and a vivid broad rolling...

Posté par Alain Truong à 18:47 - Commentaires […] - Permalien [#]

Tags: black opal

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8 juin 2020

Midnight Black Opal with Red and Green Pattern Cathedral Window, Lightning Ridge, New South Wales, Australia

Lot 58. 36.92 carats Midnight Black Opal with Red and Green Pattern Cathedral Window, Lightning Ridge, New South Wales, Australia. Estimate US$ 55,000 - 65,000 (€ 49,000 - 58,000). © Bonhams This stunning "nobby" opal cabochon (nodule opal) has a midnight...

Posté par Alain Truong à 18:38 - Commentaires […] - Permalien [#]

Tags: black opal

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