A lot of us buy CZ online and take our chances - I have been lucky enough to usually get good stuff (sometimes though there is 'orange peeling' on 1 or 2 facets) I became a bit suss with my latest batch though, when shaping the swarf had a dirty yellow colour to it, once I started I can't polish without the meet points crumbling and tiny scratches appearing no matter how much I polish - just the risk we take.
