It is a silicate of beryllium and aluminum and belongs to beryl group. It is reported from Dassu and Khaplu, Baltistan [5] [114]. It occurs in the pegmatites of Karakoram and NW Himalayas. Light blue aquamarine is most abundant in the gem pegmatites of Gilgit-Skardu area [99]. The better known deposits are Iskere, Shingus, Dusso and Tisgtung. These areas have good potential for deeper blue colour, high priced aquamarine and merits further exploration and development [8].