13 novembre 2010

Extraordinary Boulder Opal Cabochon. Koroit, Queensland, Australia

Extraordinary Boulder Opal Cabochon. Koroit, Queensland, Australia © 2002-2010 Bonhams 1793 Ltd  Weighing approximately 188.0 carats and measuring 70.0 x 32.0 x 12.5mm - Sold for $8,540 This is an exceptional and very large, gem-quality pear-shaped cabochon of boulder opal exhibiting a web pattern of fine lines of electric green and blue opal in the ironstone matrix. The green and blue coloration as well as the near-metallic luster of the piece are evidence of its high iron content. Bonhams & Butterfields. The... [Lire la suite]
Posté par Alain Truong à 16:35 - - Commentaires [0] - Permalien [#]
Tags : , , ,
12 novembre 2010

Rare Boulder Opal and Diamond Necklace—"The Black Rainbow". Queensland, Australia

Rare Boulder Opal and Diamond Necklace—"The Black Rainbow". Queensland, Australia © 2002-2010 Bonhams 1793 Ltd Designed and fabricated by James Currens. 2009 AGTA Spectrum Award Winner for 1st Place—Phenomenal Gemstone Category Featuring a fancy cabochon natural boulder opal, weighing approximately 34.80 carats, exhibiting the most extraordinary ribbon pattern characterized by strong horizontal stripes of iridescent green and electric blue on an ironstone matrix. The exquisitely hand-fabricated platinum... [Lire la suite]
Posté par Alain Truong à 23:12 - - Commentaires [0] - Permalien [#]
Tags : , , ,