Huge 600cts Koroit Opal Rough/Slice Pinfires/Patterns throughout Queensland Australia

I have for sale a Large and Nice Quality Koroit Opal Sliced specimen from Queensland Australia. This piece weighs 600cts and is 88x60x15mm.  It has two main layers, The Lighter Inner core section, and the more patterned Outer layer. There is Pinfire and colour running all the way through the whole piece, with some Slightly larger veins/pattern through the edges. Superb Large specimen and collectors piece once cleaned up. Colour and patterns are throughout, double sided too so if ypou wanna chop it up and make lots of cabs, always an option.  Thanks for looking,.,.,.