Corcoran Opal Field, Lightning Ridge, New South Wales, Australia A pear-shaped cabochon with a rich black body color to the crystal and indication that it was formed inside a nodule of clay, having vivid green and electric blue play-of-color to both the face as well as the reverse side which is domed. Of suitable size and type for mounting as a unique double-sided pendant. Weighing approximately 26.16 carats and measuring 25.5 x 20.8 x 8.8 mm