Help identify these tiles please

[Markopolo797]

Not sure of name, or if they're porcelain or ceramic (suspect the latter), these are fitted on kitchen floor and am struggling to identify them, or find on-line. They were fitted in the house when we bought it back in 2005. The tiles measure 13"x13" (33x33cms), some are white/stone coloured, while others have a pinkish/brown tint - both from the same 'range' of tile, identical in pattern & size. Have a couple with hairline cracks which I'd like to replace. Looking for c.10. Thanks.