16 avril 2017

18-karat gold, opal, sapphire and garnet brooch, Tiffany & Co., Designed by Louis Comfort Tiffany, circa 1920

Lot 77. 18-karat gold, opal, sapphire and garnet brooch, Tiffany & Co., Designed by Louis Comfort Tiffany, circa 1920. Estimate $60,000–80,000. Photo: Sotheby's. Centering a round black opal measuring approximately 18.5 mm, within an openwork plaque set with numerous round sapphires, demantoid garnets and spessartite garnets, the reverse of the opal decorated with scrollwork flourishes, signed Tiffany & Co.; circa 1920. With signed box. Provenance: Sotheby's New York, Jewels From the... [Lire la suite]

04 août 2015

The finest opal ever unearthed will be publicly displayed for the first time in Australia

Opals were first discovered at Coober Pedy -- widely-known as the opal capital of the world -- in 1914 by a boy named Willie Hutchison. Photo by Richard Lyons, courtesy South Australian Museum. SYDNEY.- An Australian museum said Monday it would exhibit what it believes is the best opal stone ever found -- a 6.0-centimetre (2.4 inch) multi-coloured gem unearthed in the Outback named the Virgin Rainbow. The South Australian Museum said the stone, valued at more than Aus$1.0 million (US$730,000), would go on public display... [Lire la suite]
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08 août 2014

A selection of Animal Carvings by Gerd Dreher at Leslie Hindman Auctioneers, September 16, 2014

A Fine Opal Carving, "The Pig," Gerd Dreher, Idar-Oberstein, Germany, 11.70 x 7.75 x 4.70 cm. Estimate $ 20,000-30,000. carved from an impressively large Brazilian opal nodule of even and richly saturated reddish orange color, the reclining pig is realistically depicted on a patch of rough ground, the skin intricately textured to suggest fine hair, the snout and ears fashioned to reveal the highly translucent and almost transparent gem quality of the opal, the eyes inset with hand painted details. Hand... [Lire la suite]
21 juillet 2014

The largest opal matrix stone was found in the outback Opal Fields of South Australia

Stuart Hughes of Liverpool along with his partners in Australia have recently uncovered the world’s largest Opal matrix.It was found in the outback Opal Fields of South Australia.This precious stone weighs in at an amazing 55,000 carats.The stone is still in South Australia.The length is about 30cm, height varies from 15-20cm and its around 4cm thick.Set to go to auction in the UK valued at just over 1 million Dollars. More information will be soon following on www.stuarthughes.com
Posté par Alain Truong à 09:09 - - Commentaires [0] - Permalien [#]
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05 février 2014

Gold, opal and enamel ring, Georges Fouquet, circa 1900-1910

Gold, opal and enamel ring, Georges Fouquet, circa 1900-1910. Photo Sotheby's Set in the center with a fancy-shaped opal, within a frame of foliate design applied with bluish-green enamel, size 7, signed G. Fouquet, numbered 9730, maker's marks, French assay mark. Estimate 10,000 — 15,000 USD. LOT SOLD. 28,750 USD. Provenance: Formerly from the Collection of Mildred Anna Milton Williams, San Francisco. Note: For examples of other rings by Georges Fouquet from this period see Les Fouquet: Bijoutiers & Joailliers à Paris... [Lire la suite]
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02 janvier 2014

Opal, diamond and pink sapphire necklace

Opal, diamond and pink sapphire necklace. Photo courtesy Sotheby's. Of floral motif design, suspending on an articulated flower set with a jelly opal weighing approximately 9.20 carats, surrounded by circular-cut pink sapphires together weighing approximately 1.30 carats, to petals set with brilliant-cut diamonds, highlighted by a flower bud set with three fire opals together weighing approximately 1.40 carats, the necklace decorated with brilliant-cut diamonds of brown hue, supporting numerous oscillating pear-shaped rose-cut... [Lire la suite]
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30 décembre 2013

Opal in matrix from Mexico.

Opal in matrix from Mexico.
Posté par Alain Truong à 17:54 - - Commentaires [0] - Permalien [#]
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27 juillet 2013

Azurite, Pietersite, Opal, Malachite

Lightning Ridge Opal Specimen, 7 x 4.5 cm. Lightning Ridge Opal Specimen Small Koroit Boulder Opal pendant, 3 x 1.8 x .5cm. Pietersite slab. Namibia, Africa, 15.4 x 8.5cm Pietersite slab, 29 x 13cm Azurite Crystals Malachite Crystals. Star of the Congo mine, Republic of Congo. Approximately 5.75" x 3.5". Flowering Malachite, Bagdad, Arizona Flowering Malachite, Bagdad, Arizona Azurite and Malachite. Approximately 6 1/2" x 3" (source Wood's Stoneworks and Photo Factory http://www.flickr.com) ... [Lire la suite]
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13 juillet 2013

Papagoite, Quartz, Fluorite, Opal, Ikaite & Celestine

Papagoite included in Quartz; Messina Mine, Messina District, South Africa Fluorite under long wave UV; Rogerley Mine, Country Durham, United Kingdom Celestine; Mahajanga Province, Madagascar Opal after Ikaite; White Cliffs, Australia Boulder opal; Australia
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04 juillet 2013

The Opal collection of Princess Ceril Birabongse of Siam at Sotheby's London's auction on July 11th

  Opal Brooch set with Emeralds and Sapphires, 1920s. Photo Sotheby's. Centring on an oval black opal within a foliate surround of circular-cut emeralds and sapphires and single-cut diamonds. Estimate 5,000-7,000 GBP Formerly in the collection of Princess Ceril Birabonse of Siam. Ceril first met Bira in 1933 at the age of 17 when he was 20, three weeks later he asked her to marry him and thus began the story of Bira, Prince of Siam, grandson of King Monghut, immortalized by Richard Rodgers and Oscar... [Lire la suite]
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