99 verso : The tenth stone, Chrysoprase Folio 99 verso : The eleventh stone, Hyacinth Folio 100 recto : The twelfth stone, Amethyst Folio 100 recto : Of stones and what they can do (De effectu lapidum) Gallery See also Bestiary List of medieval bestiaries Physiologus Ashmole Bestiary Paris Psalter Aviarium References External links The Aberdeen Bestiary Project - University of Aberdeen, Online version of the bestiary. David Badke, The Medieval Bestiary : Manuscript: Univ. Lib. MS 24 (Aberdeen Bestiary) Bestiaries University of Aberdeen 12th-century illuminated manuscripts Biology books Works of unknown authorship