Beryl (Var: Aquamarine), Muscovite
Cabinet, 14.2 x 7.8 x 7.2 cm
Aliabad, Hunza Valley, Gilgit District, Northern Areas, Pakistan
Each of the crystals on this matrix specimen is superb in gemminess and transparency, with glassy luster. They exhibit fine transparency and rich blue color. Both measure about 4 cm tall and 3.5 cm across the width of the terminations. However, the leftmost crystal is a normal hexagonal prism, a stereotypic beryl crystal. The rightmost is truncated on the depth axis and so is compressed, creating a starkly contrasting geometry to the crystal on the left. Why this should be, is hard to explain - usually beryl crystals on the same matrix plate would have identical habits and it is rare to find otherwise. The crystals rest in, and are complemented by, a nest of muscovite blades that covers underlying base rock.