'The Selection of Treasures Regarding Precious Stones' by Ibn al-Akfani (Muhummad ibn Ibrahim al-Sa'd al-Ansari al-Sanjari, ca. 1286-1348 CE), an Arab scientist and physician. This work of Ibn al-Akfani is a treatise of precious stones, in particular the hyacinth. This publication is researched/annotated by Anastas Mari al-Karmali and includes 8 pages of color illustrations/photos.