NIce Rough/Rubbed/Sliced Boulder Opal Parcel 645cts Some Blue/Green Fires Au

I have for sale a Nice PArcel of Rough and Rubbed/Sliced Boulder Opals from Queensland Australia. These weigh 645cts in total. They are Ironstone base material with Opal on one face, maybe a few with VEins aswell. These have some Blue/Purples, and some Greens in places.  Some better than others, more/less Opal on them. Great Specimens and Practice material all with Colour to work with. Should get some nice usable specimens/Freeforms once cleaned up ...  Thanks for looking,.,.