3 Nice Koroit Opal Rough/Sliced Specimens 1758cts Superb Patterns Some Fires Au

I have for sale 3 Nice Rough/Sliced Koroit Opals from Queensland Australia. These weigh 1758cts in total. Ironstone nut, or parts of nuts with lots of Intricate Patterns through them. White potches and some Fires in places. Red Ironstone core. There is a big thick chunk with Whiter veins/dense patterns and a few hints of Reds in places.  Next is flatter with lots of Blues. Fine veins. Will cut a superb picture cab. Lastly double sided interesting patterns with some Blue/Greens in a few places.  Will cut some superb cabs/freeforms/picture stones, or make specimens. Thanks for looking.