Here is a large bulk parcel of rough/raw, as is out of the ground, Andamooka concrete matrix, total weight 25kg+. Can be cleaned up for large specimens, carvings, or cut into many stones. You will need to know how to treat matrix opal to darken the stones. This parcel is in the rough, having some excess host rock, this has been taken in to account when priced. Here’s a link to the YouTube video https://youtu.be/J_q5Ni1FwN8?si=inrTO_CeX7crIOhH (video form part of the description) Postage is au$15 within Australia, au$250 for international post.