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 [#]
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