Partially. My skin is, and my bones are more dense than usual. I'm a chimera; part rock golem.

[As if that explained things. Well, to Zel it did. He was a bit surprised that Lapis had been both blunt and very calm about it. Granted, this train had a number of people whose species Zelgadis just didn't recognize; and he didn't know what Lapis was beyond 'probably water-related'.]