UV Reactive Columnar Calcite Cluster Specimen Great White Shark This fibrous malachite and azurite

This fibrous malachite and azurite specimen has been sliced into a slab

and the lovely purple hue is enhanced by a hint of citrine and inner rainbows

you can't help but be struck by its delicate beauty

(Trilobites lived 250 million years ago)

This polished black and white orca agate is shaped like a beautiful flame

UV Reactive Columnar Calcite Cluster Specimen Great White Shark This fibrous malachite and azuriteThis striking calcite specimen is a true beauty! Under normal light conditions, it appears as solid gray columns of calcite. But when exposed to ultraviolet (UV) light, it transforms into a fiery orange hue. This phenomenon is caused by calcite's property of fluorescence, which refers to its ability to absorb UV light and then emit visible light of a different color. Approximate Size: L: 2. 70" x W: 3. 20" x H: 2. 80" Approximate Weight: 0. 60 lbs.