This is one of the longest crystals of Erythrite, so far as I know; I have never personally seen one so elongated and complete. Not only is it big, it is miraculously pristine - which if you have seen a number of these, you know how rare that fact is. The gorgeous, elongate prismatic crystals spray up vertically from a thin shard of matrix at the base. Overall, this is extremely aesthetic AND important for the species. It is not the typical example by any means and I was enormously impressed when I first saw this in a collection well over a decade ago. Impressive and stunning! The video speaks for itself.