Dims: 5.0x2.8x2.0" (12.6x7.0x5.0 cm)
Wt: 11.5 oz. (325g)
This cabinet specimen presents several sprays of dark blue (almost black) vivianite crystals on an unusual matrix. This host rock is composed of hundreds of round nodules glued together by a crumbly clay-like material. Every cavity is filled by vivianite, as was much of the largest cavity in the original rock (where the vivianite is now exposed). Under a loupe, the smallest needles of vivianite are tranparent and blue. This is most easily seen on the crystals which are somewhat hidden and therefore protected from light. Remember that vivianite darkens upon exposure to light, and specimens should be stored in the dark as much as possible.