Chrysoberyl and Alexandrite are both have distinct Differences

Color Changing Properties: Alexandrite is famous for its unique ability to change color under different lighting conditions. It typically appears green in daylight and reddish-purple under incandescent light. This phenomenon is called pleochroism.

Chemical Composition: Both chrysoberyl and alexandrite are forms of beryllium aluminum oxide. However, the presence of trace elements like chromium in alexandrite is responsible for its color-changing ability.

Color Variations: Chrysoberyl comes in various colors such as yellow, green, and brown, but it does not exhibit the dramatic color change of alexandrite.

Value and Rarity: Alexandrite is generally more valuable and rare compared to regular chrysoberyl due to its unique optical properties and scarcity.