cornelpine

Cornelpine is most impressive in blue and green, but it also comes in a variety of other colors, including brown, yellow, orange, and black. One of its characteristics is that it is highly pleochroic, appearing in different shades depending on the viewing angle. Some of them fluoresce when exposed to ultraviolet light, and some green crystals exhibit a "cat's eye effect."

Karatz GemMagazine
" Cornellpine "