A stunning contemporary vivianite from Morococala. This mine is best known for the specimens it produced in the 80's, though there has been next to no production of note since then. These days, the majority of Bolivian vivianites on the market came from the Tomokoni Adit (those are the crystals on reddish-brown sandstone matrixes) with the occasional piece form Huanuni (typically a more bluish hue, on a sulfide rich matrix.)
This one has the complex side faces that distinguish Morococala vivianites from those found at other localities. The main crystal is particularly large, and I would say exceptionally wide-- but I believe the best display angle is actually from the side (see image directly to the right of this description.)
Please note, the color is more of a darker bluish green than the crisp grass green you might be seeing- really, it varies with the lighting type.
You are getting a lot of bang for your buck with this piece.