User blog comment:Scalec/Rocky Thinking/@comment-5782071-20170807183259/@comment-31772644-20170809033438

He'd obviously had experience experimenting with artifacts. he seemed pretty confident in how to cure Myka's cancer, and that involved actually melting down one of the artifacts used. it's not hard to imagine that some combination of artifacts as well as some modern science beyond it's time could have produced solid rock.

Back to the original point, did the show ever actually mention Flamel? He could have been a work of fiction to throw people off the real culprit, especially since Paraclecus was already well known in his time.