Exceptionally Fine and Large Boulder Opal
This is an extraordinary boulder opal both in terms of its size but also due to the vividness and strength of its color. Contour polished to reveal the gem-quality blue and green seam of opalization upon its rich brown ironstone matrix. This is a large, yet wearable opal sure to make a "statement piece" pendant; and a durable one at that, due to the stability provided by the ironstone matrix.
Weighing 336.0 carats and measuring 2 3/4 x 2 x 5/8in (7.5 x 6.0 x 1.5cm)