Prehnite is not normally the first mineral you think of when you say "Brandberg" and "world class" in the same sentence. But there IS more than quartz here, and the rare specimen like this proves it. This piece has large, lustrous, translucent prehnite crystals in golbular clusters to over an inch, perched beautifully and 3-dimensionally on matrix of quartz. It is exceptional for the locality AND the species; and happens to be a pretty piece as well. Comes with custom base.