Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "Lapideum Regnum" nom. inval. - mineral kingdom
           Class "Petrae" - stones
             Order "Vitrescentes" - glassy stones
               Genus "Qvartzum" [U.R. von Kalbe], [1505?] - quartz
                 1 "Qvartzum aqueo-album"
                 2 "Qvartzum luteum"
                 3 "Qvartzum rubrum"
                 4 "Qvartzum purpureum" - amethyst
                 5 "Qvartzum coeruleum"
                 6 "Qvartzum viride"
                 7 "Qvartzum viridi-coeruleum"