Lightning Ridge Opal Rub wet in a small glass display dome. Shown both dry, next to tone scale, and wet in the dome. Really beautiful colors! Let me say, it does appear better than the photos. See video below.weighs 35.5 CT’s. greybase opal that has top rubbed to color bar, really beautiful greens and blues. I think it classes as dark opal, N6 or N5 ???. possibly a cutter or keep as a specimen.   a crack in the back which, if not sold, i will eventually get to grinding out. If I grind this down, the closer it gets to a finished gem the price will of course go up considerably. 

Lightning Ridge Opal Rub 35 CT’s rough