Fluorescent Hexagonal Sandwich Calcite Crystal Cluster pink heulandite With 365nm long wave UV

With 365nm long wave UV

These beautiful amethyst crystals slowly precipitated from the silica-rich groundwater in a radial pattern in the narrow voids

Size: 72 x 35 x 25 mm

Amethyst stalagmite slices are a type of mineral formation that occur when water containing dissolved silica and iron flows over the ceiling of a cave and forms icicle-like structures

Fluorescent Hexagonal Sandwich Calcite Crystal Cluster pink heulandite With 365nm long wave UVHighly lustrous hexagonal sandwich calcite crystals in a stacked formation. Each stacked, tabular hexagonal calcite crystal shows an interlayering of white and clear greenish calcite. The clear light green layer has an alternating point up point down triangular geometry visible on the side faces. Slight green tint is from hedenbergite. The bottom has been smoothed a bit and there are some matrix mineral remnants. The calcite fluoresces a vibrant