WOW!!! Thanks for the DD, and for all of the very kind comments!
Bismuth crystal gone wild.
Another example of my work. Unfortunately, crystals with this structure can only be bought directly, not shipped. However, I do have many that can be shipped (anywhere in the world), in my eBay store: [link]
Also, to be clear, I make these crystals myself. They do not occur naturally in this form.