gems, spinel, Afghanistan, Tajikistan, balas ruby, Kuh-i-Lal, clinohumite, lapis lazuli

Although in my communication to the Imperial St. Petersburg Mineralogical Society on 27 March 1884 I had the honour of presenting a general outline of the journey I made to the Pamirs in 1883, nevertheless, since the general geographical results of this journey were published in the Izvestiya of the Imperial Russian Geographical Society, in the present report I shall confine myself solely to the geological data obtained during my investigations.