Kornerupine Rare collection stone Natural stone, with its certificate of authenticity. In some transparent stones, colors and intensity vary depending on the direction. We speak of dichroism when the crystal shows two main colors, of trichroism when there are three colors. The latter is only possible in rhombic, monoclinic, and triclinic systems. The term pleochroism applies to both phenomena. ... info ... mode= Add to basket
