Beautiful 310 carat Australian Wood Replacement Boulder Opal. This is a one-of-a-kind stone, looking for the right owner to enjoy it. The cut and shaping is freeform, meaning no particular shape to it. This is a collector's piece. Age is 100+ million years old. The colors on the stone are some of the rarest together, with bright flashes of the full rainbow of colors. Cannot find a stone like this anywhere on the market today! Museum piece. The stone is nicknamed "Bullseye" as it resembles a bull's head and eye. Get your hands on this rare piece today!