A classic quartz from the amazing gem quartz mines of Colombia, but with a special crystallization habit that gives it an extra face in the middle and an extra face atop. We admit to not being expert on the fancy twins of quartz, and I have seen some people call this style a twin of one type or another but I do believe it to be just extra faces on a prismatic crystal. Still, the effect of those extra faces is striking and the crystal is visually clean and without impurity or color.