| With tourmaline's strong pleochroism, darker tourmalines are cut to display the lighter of the two pleochroic colors. |
| The mineral glaucophane, for example, has a pleochroism scheme of colourless, lavender, and sky blue. |
| Orthorhombic amphiboles exhibit less intense pleochroism than the monoclinic amphiboles. |
| Biotite occurs as interstitial grains with strong pleochroism from light yellowish-green to dark brown. |
| Cordierite is often referred to as dichorite because of its strong pleochroism, which produces gemstones that appear to change shades of color, depending on the viewing angle. |
| Optically, purple apatite commonly shows slight bluish to reddish pleochroism. |
