Koroit boulder opals are unlike any other. The color is often inter dispersed as glittery flashes and veins. This is in contrast to the seams more common of Opalton. Some, like this one, are even double sided with color!
This one also required a bit of creativity to maximize the color. You will notice it is much thicker on one side then the other. We can only follow what Mother Nature gives us.
This beauty measures 24 x 18 x 6 mm and weighs 3.16 grams.