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Frankonian stone isn't very hard either - at least mine's not - laps very easily even with a worn-out diamond plate.

Yeah they seem to have a bit of range in both appearance and hardness. By reading their accounts, some guys have gotten what they've described as some fairly soft ones, and others are super hard.

If those lines are reddish (and it's pretty hard) I think it could definitely be a Charn still. They have all kinds of different and varied markings from the examples I've seen.

Big stone is probably Rouge du Salm, BBW or something along those lines - I'd say definitely not Vosgienne - the figure (almost like woodgrain that changes dependent on viewing angle) that is present...