Lightning Ridge, New South Wales, Australia A classic, true black "nobby" opal (i.e. an opal originally formed in a clay nodule) with rich body color, and a vivid green and blue play-of-fire. This is a fine collector's stone. Weighing approximately 11.8 carats and measuring 19.51 x 14.84 x 7.05mm
Lightning Ridge, New South Wales, Australia A classic, true black "nobby" opal (i.e. an opal originally formed in a clay nodule) with rich body color, and a vivid green and blue play-of-fire. This is a fine collector's stone. Weighing approximately 11.8 carats and measuring 19.51 x 14.84 x 7.05mm
.jpg "Source: Christie's")
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
