![Green Tourmaline and Diamond Halo Ring. The Tourmaline Color is a More Yellow Green from this Crystal Direction – Exhibiting Pleochroism. Green Tourmaline and Diamond Halo Ring. The Tourmaline Color is a More Yellow Green from this Crystal Direction - Exhibiting Pleochroism.](https://www.langantiques.com/university/wp-content/uploads/elementor/thumbs/green-tourmaline-and-diamond-halo-ring_1_30-1-10336-q88jyumr4x3qmqqefo0yutb2kkxoduk56pxlcr8rk8.jpg)
![Green Tourmaline and Diamond Halo Ring. The Tourmaline Color is a More Olive Green from this Crystal Direction – Exhibiting Pleochroism. Green Tourmaline and Diamond Halo Ring. The Tourmaline Color is a More Olive Green from this Crystal Direction - Exhibiting Pleochroism.](https://www.langantiques.com/university/wp-content/uploads/elementor/thumbs/green-tourmaline-and-diamond-halo-ring_5_30-1-10336-q88jyye3w98vx6kxtpnh4scwy4f58mz2j8jj9v36vc.jpg)
The property of most doubly refractive colored minerals of exhibiting either two or three different colors when viewed in different directions in transmitted light. Dichroism (two colors) and trichroism ( three colors) are the two categories of pleochroism.
![Green Tourmaline and Diamond Halo Ring. The Tourmaline Color is a More Yellow Green from this Crystal Direction – Exhibiting Pleochroism. Green Tourmaline and Diamond Halo Ring. The Tourmaline Color is a More Yellow Green from this Crystal Direction - Exhibiting Pleochroism.](https://www.langantiques.com/university/wp-content/uploads/elementor/thumbs/green-tourmaline-and-diamond-halo-ring_1_30-1-10336-q88jyumr4x3qmqqefo0yutb2kkxoduk56pxlcr8rk8.jpg)
![Green Tourmaline and Diamond Halo Ring. The Tourmaline Color is a More Olive Green from this Crystal Direction – Exhibiting Pleochroism. Green Tourmaline and Diamond Halo Ring. The Tourmaline Color is a More Olive Green from this Crystal Direction - Exhibiting Pleochroism.](https://www.langantiques.com/university/wp-content/uploads/elementor/thumbs/green-tourmaline-and-diamond-halo-ring_5_30-1-10336-q88jyye3w98vx6kxtpnh4scwy4f58mz2j8jj9v36vc.jpg)