black opal

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 flash of color electric green mixed with blue and purple and a dash of orange, in a pattern known in the opal hobby as "straw" pattern, with a bar of orange at the side. Weighing approximately 26.01 carats and measuring 30.1 x 18.5 x 7.0mm. Bonhams.... [Lire la suite]

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 black base color with a "cathedral window" patterned effect of broad patches of vivid green, vermilion red, orange and yellow. Such large opals with a rich saturation of color are now difficult to find in the marketplace. Weighing approximately 36.92 carats and... [Lire la suite]

Lot 114. 41 carats Black Opal with Floral Pattern Red Play of Color, Lightning Ridge, New South Wales, Australia. Estimate US$ 70,000 - 80,000 (€ 62,000 - 71,000). © Bonhams A large and impressive "nodule" opal (a nobby), having an incredible pinfire play-of-color dominated by reds and orange with minor flashes of green and blue. This is an exceptional opal with a true black base color and a notable offering for the knowledgeable collector. Weighing approximately 41.40 carats and measuring 37.99 x 22.07 x... [Lire la suite]

Lot 128. A black opal, demantoid garnet and sapphire pendant necklace, by Louis Comfort Tiffany, Tiffany & Co. Estimate USD 20,000 - USD 30,000. Price realised USD 93,750. © Christie's Images Ltd 2017 Suspending an oval black opal cabochon, within a sculpted gold grapevine surround, enhanced by circular-cut demantoid garnets and sapphires, to the double-strand finelink neckchain, set with links of similar motif, with gold grapevine detail at reverse of pendant, circa 1910, 23 1/2 ins.,... [Lire la suite]

Lot 184. A black opal, demantoid garnet, sapphire and enamel necklace, by Louis Comfort Tiffany, Tiffany & Co. Estimate: USD 90,000 - USD 120,000. Price realised USD 118,750. © Christie's Images Ltd 2017 Suspending a drop black opal cabochon pendant, within a textured gold foliate mount, to the black opal cabochon surmount, within a circular-cut demantoid garnet, sapphire and gold bead scroll, enhanced by a circular-cut demantoid garnet floret, the reverse of green, blue and orange... [Lire la suite]

Rare Black Opal, "Mackerel or Ribbon Pattern", Lightning Ridge, New South Wales, Australia. Estimate US$ 40,000 - 50,000 '€37,000 - 46,000). Photo Bonhams. A beautiful opal either by night or day, the present stone is particularly notable for its mackerel pattern, the name for the ribbon pattern of opalization which is so sought-after by knowledgeable opal collectors. Displaying extensive orange ribbons with some flashes of red, when the stone is rotated, iridescent green flashes abound, intermingled with some... [Lire la suite]

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 gem possess true black potch as well as some play-of-color to the reverse side as well. Weighing approximately 8.14 carats and measuring 18.98 x 12.83 x 5.08mm Bonhams. THE WORLD OF OPALS, 23 Nov 2015 15:00 PST - LOS ANGELES

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 of color, interspersed with electric blue and purple and splashes of green. With some play-of-color on the reverse, the stone retains some semi-black potch to the reverse as well which enhances the vibrancy of the colors.Weighing approximately 47.15 carats and measuring... [Lire la suite]

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). Photo Bonhams. Found over 10 years ago in Grawin Field, the present specimen of seam opal was left as close as possible to the natural state in which it was found. Cut and polished by the artist who was then Australia's foremost opal carver, the late... [Lire la suite]

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; an oval black opal, weighing approximately 12.12 carats; an oval black opal, weighing approximately 13.0 carats; a free-form semi-black, weighing approximately 14.0 carats; a free-form black opal, weighing approximately 14.12 carats, an oval black opal, weighing... [Lire la suite]