An outstanding cluster of Aquamarine and Schorl from the Erongo Mountains in Namibia. While the lower Aquamarines are etched and heavily intergrown with the Schorls, the single large dominant crystal is superb for Erongo. The major Aquamarine is 2.5 cm tall and 1.8 cm across, and the upper 1 cm is gemmy and a gorgeous blue. The luster is glasslike, and the near-perfect termination has a fabulous, sharp notch because of an intergrown Schorl that impales it. This simple penetration adds great mineralogical interest to an already terrific crystal. Ex. Charlie Key.