Dry pressed ceramic Niro Granite flaky?!?

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Hi
I have has delivered of 90 x Niro Granite dry pressed ceramic tiles from tile giant - sold as Basaltina White GBS01 on their web site.

I have opened two boxed and only four tiles are complete (out of twelve tiles) the others have had their corners knocked off. I could understand it if it was one bashed corner but looks to be from all four corners.

The tiles seem weak and flaky. I really like the look of them but an worried if I get replacements and laid them they would chip if anything was dropped on top of them. And even be a nightmare to cut and drill.

Anyone with experience or advice?

Thanks

 

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Having removed some from their boxes they are marked with pencil and chalk and look to be someone else's returns / overs. Whole lot going back - doesn't seem to be a generic problem.