
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]