Daylight contains high proportions of blue and green light and incandescent lighting contains a higher balance of red light. It forms during the metamorphosis in the contact zone of two rocks one of which supplies the minerals aluminum and beryllium the other the necessary chromium. An alexandrite cat s eye is a chrysoberyl cat s eye that changes color. What makes alexandrite different from other varieties of the mineral such as a cat s eye is the presence of not only iron and titanium but also chromium as a major impurity. Alexandrite is a variety of the mineral chrysoberyl.
Alexandrite effect is the phenomenon of an observed color change from greenish to reddish with a change in source illumination due physiological response of the human eye in a particular part of the visible spectrum. Alexandrite is tertiary in chromium containing gemstone. Milk and honey is a term commonly used to describe the color of the best cat s eyes. This combination of elements results in the green color of the gemstone. Alexandrite effect is the phenomenon of an observed color change from greenish to reddish with a change in source illumination due physiological response of the human eye in a particular part of the visible spectrum.
This combination of elements results in the green color of the gemstone. Daylight contains high proportions of blue and green light and incandescent lighting contains a higher balance of red light.
