Nice Koroit Opal Nuts/Pattern Chunks/Specimens 548 Grams Queensland Australia

I have for sale a larger parcel of Koroit Opal pattern stones from Queensland Australia. These 4 pieces weigh 548 Grams or 2742cts.  Ironstone Nut pieces with White Potch patterns skins, Tribal designs running over them. Covered by a sandy skin mostly. Odd slight bit of Fires in places, but not much. Maybe more when cleaned up. Specimens and pieces to carve/slice, cut Freeforms/Pictures stones and similar. Thanks for looking.