How do gemstones get their color?
Chemistry For Your Life
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The Different Colors of Alexandrite
Alexandrite is known for being able to literally change colors in different light. Because of the way it absorbs and what's left behind, you know, blue and red make purple. It can look very purple in high, warm toned light and it can look very blue green in a low warm tone light with more cool colors in there. And even the lights tend to have a different color to them even if they don't hear that way to us.
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