Huge 296.5cts Rough Lightning Ridge Crystal/Grey/Black Opal Chunk Blue/Purple Fires

I have for sale a very Nice and Huge Rough Opal from Lightning Ridge Australia. This piece is 50x49x23mm and has 2 sections, Around half has Blue/Purple Fires in Mixed base Opal on one side. The other is Black/Grey Potch, and then some sand in a few places aswell.  Really is a large piece with half Colour through it. Slight Greens where the Purple/Blue and Black meet in one end. Superb Specimen for a collector, or clean up and slice/Polish up a very large cab, or cabs from it. (I have halved the weight, so around 150cts, then priced at $8/Ct Au for the colour. (then reduced it)) Thanks for looking.,,.,.