Nice Large 460cts Half Koroit Nut Fires/Patterns Skin over it, Sliced Specimen Australia

I have for sale a Nice Large half Nut/Sliced Koroit Opal Specimen from Queensland Australia.  This one weighs 460cts and is 70x63x19mm,.  It has the sliced face with Concenric ring patterns and some Fine Fires running through it. The Domed, outerskin is still covered with the Cap. Some pattern exposed in a few places with Nice Green/Blue veins looking likely across the stone. Great stone to clean up, rub the top over and see what beauty lies beneath. Make a Large Specimen Cab or simiklar once done,.,. Thanks for looking,..,