Lapis Armenicus: i.e. a stone in which there is something of the color of lazuli. It is smooth to touch. It is called Lapis Armenicus for the reason that it is found in Armenia. It has a somewhat bright color and has less gravity than
Nature: cold and dry in the second degree. It purges phlegm more effectively than lapis lazuli does. For that reason it is suitable for quartan fever, and for every melancholic disease. Avicenna says it is bad for the stomach. However, should it be washed it does not nauseate, should it not be, it does. The dose is the same as for lapis lazuli.