3 Large Koroit Polished Opal Specimens 625cts Green/Blue Fires Queensland

I have for sale a parcel of 3 Large Cut/Polished Koroit Opal Freeforms from Queensland Australia.  These weigh 625cts in total.  Ironstone base stones, mixed base colours, and slight patterns. Each has some Fires, not much, but some, Greens/Blues in patchy pinfires and veins on the fronts/edges. Little/No Colour in the backs. All are Fully polished. Great specimens for someone. Thanks for looking.