Assertion: alexandrite's color | /r/CapableOf | change to various shades of red
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text: The natural color change in Alexandrite ranges from various shades of Green (blue-greens, kelly-greens, olive-greens, teal-greens, etc.) when the gem is under "fluorescent" lighting, or in natural outdoor light "in the shade" (not direct sunlight)... then the color changes to various shades of Red (burgundy-reds, purplish-reds, reddish-purples, violetish-purples, amethyst, etc.) when exposed to light in a room with only incandescent light, tungsten light, or candlelight (a flashlight will bring out the color change too).