This specimen is composed of a single column of deep-blue aquamarine with black tourmaline associated.

The clarity of this crystal is not that good, but this is made up for by its deeper blue colour.

Two sides of the crystal have been affected by the tourmaline, but other than this natural contact the crystal is undamaged with a perfect termination.

Chemical Composition: Be3Al2Si6O18

Group: Silicates

Location:This specimen is from the Erongo Mountains, near Usakos, Namibia.