I have for sale a Larger parcel of Rough and Sliced Koroit Opals and specimens from Queensland Australia. These weigh 1088cts in total.  These have Patterns through them, some with Fires in places, some with No Fires.. The piece with a vein of pattern all across has No Fires, but some of the others with Pattern do have colour. There is a Fully rough piece here aswell with Figure 8 Vein shapes in it.. May well have Colour when sliced.Rubbed. Great Specimen, Practice and some pieces will Finish Freeforms and Picture stones, maybe pendants aswell if drilled too. Thanks for looking,.,.,.