A treatise on the properties of inscribed stones, as indicated by the title 'On the carving of stones'. It is preceded by a short prologue where it is presented as the translated work of a Jewish philosopher called Tehel in this manuscript, but whose name's spelling could be Thetel or Zael. The content is similar to that of the previous text.

Prologue: on f. 99r. It begins with the words Libellus cujusdam philosophi Judeorum Tehel nomine qui scripsit eundem de sculpturis lapidum and ends Hunc libellum Tehel transtulimus in Latinum.

Text: it begins on f. 99r with the words Quando invenitur laspis; it ends on f. 102r with the words illis qui potestatem habent super homines.

Seemingly written by the same hand responsible for the Lumen luminum minus et perfecti magisteri (Hand 2).