Large and Very Fine Boulder Opal
The center of an ironstone nodule, this cabinet-sized or tabletop specimen centers visually on the oval formation ringed with ironstone. Vivid neon blues and purples in a pattern of fine spider's web veining of iridescent opal abound across the well-polished surface. This is a textbook example of a "nobby", but one which is a world-class specimen at that--sure to entice the knowledgeable opal specimen collector.
Weighing approximately 2665.0 carats and measuring 5 x 3 1/2 x 1 1/2 in