This is a crystal of very high quality and exceptionally high vibration. 

It´s a lovely crystal, with a small amethyst phantom very well defined near the termination.
It also has analcime crystals, hematite inclusions and hollow spaces inside of it which i believe that it used to have water trapped there but at some point it evaporated.
All this traits combined makes it a unique and amazing crystal.

You can read more about the characteristics of this crystal and others in the section, "Crystal Characteristics".

This Crystal comes from the famous Streep Mine, located in the Goboboseb Mountains, Brandberg Area, Dâures Constituency, Erongo Region, in Namibia.