Post subject: Rotational color change in synthetic (!?) sapphire
Posted: Thu Mar 07, 2013 12:21 am
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Joined: Fri Jun 25, 2010 10:06 pm Posts: 2267 Location: Chapel Hill, NC / Toronto, ON
Ok, so this is probably a really dumb question that has to do with plane polarized light or something...
I have a boule of synthetic sapphire. If I hold it up to my computer's monitor, looking down the C axis of the boule, it's peach colored. If I rotate the boule 90 degrees, it's rhodolite colored. Another 90 degree rotation brings it back to peach, and again to rhodolite.
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