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Spectacular Black Opal, Corcoran Opal Field, Lightning Ridge, Australia

Spectacular Black Opal, Corcoran Opal Field, Lightning Ridge, Australia. Estimate US$ 40,000 - 50,000 '€37,000 - 46,000 ) . Photo Bonhams. A classic for the region, predominating in firey reds and full vividness of its multi-color play-of-color. This...

Posté par Alain Truong à 23:58 - Commentaires […] - Permalien [#]

Tags: Australia, black opal, Lightning Ridge, Corcoran Opal Field

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13 novembre 2015

Superb Contra Luz Fire Opal. A Published Gemstone, Magdelena, Jalisco, Mexico

Superb Contra Luz Fire Opal. A Published Gemstone, Magdelena, Jalisco, Mexico. Estimate US$ 40,000 - 50,000 ' €37,000 - 46,000 ) . Photo Bonhams. Perhaps the finest contra luz opal to appear at public auction, the present example has been contour polished...

Posté par Alain Truong à 23:53 - Commentaires […] - Permalien [#]

Tags: Mexico, Jalisco, Magdelena, Contra Luz Fire Opal

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13 novembre 2015

Spectacular Black Opal, Lightning Ridge, New South Wales, Australia

Spectacular Black Opal, Lightning Ridge, New South Wales, Australia. Estimate US$ 50,000 - 70,000 ( €46,000 - 65,000 ) . Photo Bonhams. A thick, plump and delectable specimen of opal fashioned as a high-domed cabochon. Dominated by reddish-orange flashes...

Posté par Alain Truong à 23:44 - Commentaires […] - Permalien [#]

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

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13 novembre 2015

Guinness Book of World Records: Largest Recorded Black Opal Specime. "The Sea of Opal"

Guinness Book of World Records: Largest Recorded Black Opal Specimen--"The Sea of Opal", Joe's Run, Grawin Field, near Lightning Ridge, New South Wales, Australia. Carved and polished by Christine Rousel. Estimate US$ 150,000 - 250,000 (€140,000 - 230,000...

Posté par Alain Truong à 23:39 - Commentaires […] - Permalien [#]

Tags: Australia, black opal, New South Wales, "The Sea of Opal", Christine Rousel, Grawin Field, Joe's Run, near Lightning Ridge

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13 novembre 2015

Premier American collection  of twelve lightning ridge black opals, Lightning Ridge, New South Wales, Australia

Premier American collection of twelve lightning ridge black opals, Lightning Ridge, New South Wales, Australia . Estimate US$ 600,000 - 800,000 ( €560,000 - 740,000). Photo Bonhams. Comprising a free-form black opal, weighing approximately 11.07 carats;...

Posté par Alain Truong à 23:31 - Commentaires […] - Permalien [#]

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

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12 novembre 2015

World's Largest Meteorite Carving Offered At Bonhams Auction

Unique Life-sized Skull-form Carving of a Gibeon Meteorite with Tridymite Inclusion By Lee Downey. Iron, Fine Octahedrite, Namibia, Africa. Weighing approximately 21,070 grams (21.07 kilos, 46.45 lbs). Estimate on request. Photo: Bonhams. LOS ANGELES...

Posté par Alain Truong à 16:26 - Commentaires […] - Permalien [#]

Tags: Russia, Sri Lanka, alexandrite, Aquamarine Carving, Gibeon Meteorite with Tridymite Inclusion, Lee Downey, Skull-form Carving, square cushion-shape alexandrite, "Poseidon Wrestling an Octopus"

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7 octobre 2015

Tanzanite

Tanzanite is trichroic and exhibits pronounced pleochroism. The colors respective to the three vibrational directions are sapphire-blue, sage green, and purple. Orientation is an important consideration for cutters who need to consider both the yield...

Posté par Alain Truong à 00:05 - Commentaires […] - Permalien [#]

Tags: Tanzanite

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3 septembre 2015

Tourmaline, Cranberry Red Ruby Crystal, Corundum var. Sapphire, Opal, Rainbow Petrified Wood

Very deep green chrome crystal of Tourmaline. 350 ct and about 44 x 40 mm specimen. 1.7", 556ct Sharp Cranberry Red Ruby Crystal, India. Corundum var. Sapphire - Ratnapura, Ratnapura District, Sabaragamuwa Province, Sri Lanka. Opal - Tsehay Mewcha, Delanta...

Posté par Alain Truong à 17:27 - Commentaires […] - Permalien [#]

Tags: India, opale, Sri Lanka, tourmaline, Ethiopia, Arizona, green chrome crystal of Tourmaline, Cranberry Red Ruby Crystal, Corundum var. Sapphire, Rainbow Petrified Wood

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27 août 2015

Fluorapatite, Fluorite, Spinelle, Stolzite

Fluorapatite avec inclusion cristalline de Rutile. Collection et photo Gianfranco Ciccolini Fluorite. Rocche Grana quarry, Montoso, Bagnolo Piemonte, Cuneo Province, Italie. Collection et photo Giuseppe Finello Spinelle. Monte Somma, Somma-Vesuvius Complex,...

Posté par Alain Truong à 22:56 - Commentaires […] - Permalien [#]

Tags: spinelle, fluorite, Stolzite, Fluorapatite, Collection Giuseppe Finello, Collection Domenico Preite, Collection Fulvio Iurcotta, Collection Gianfranco Ciccolini

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24 août 2015

Titanium quartz, Black Opal, Tourmaline Var Rubellite, Cerussite with Malachite Inclusions

Titanium quartz. Very large black opal carving from Lightning Ridge, Australia Rolling flashes green and blue. Tourmaline Var Rubellite, Malkhan Pegmatite Field, Krasnyi Chikoy, Eastern Siberia, Russian Federation. Cerussite with Malachite Inclusions,...

Posté par Alain Truong à 20:59 - Commentaires […] - Permalien [#]

Tags: Namibia, black opal, Liddicoatite, Russian Federation, Titanium quartz, Cerussite with Malachite Inclusions, Eastern Siberia, Krasnyi Chikoy, Malkhan Pegmatite Field, Tourmaline Var Rubellite

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