| Alexandrite, an amazing variety of chrysoberyl, changes color in different types of light. |
| Some of these approach the chrysoberyl and topaz in hardness and hue. |
| There's also another gem called chrysoberyl that's really durable and has a higher refractive index than other gems so it throws flashes of color much like a diamond. |
| Another mineral species which, like spinel, has just three elements in its composition is chrysoberyl. |
| Cymophane, or chatoyant chrysoberyl, may also be asteriated. |
| Reflection of light from parallel inclusions or a fibrous structure, known as chatoyancy, is shown best by the cat's-eye variety of chrysoberyl. |
