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Even lab-created alexandrite is quite uncommon
This is a special collector's piece--giant faceted eggs like these aren't easy to come by
One idea was to make powerful lasers that would shoot missiles right out of the sky en route
Golden laser garnet boule tips (Ce+Nd:YAG)
F-35 Fighter Jet Window Sapphire Loose Calibrated Gems (F35 Gems) Size:8mm Trillion Cut avg. 2ct Even lab-created alexandrite is quiteThese are lab created sapphires which were grown for use as a sensor window in the F35 fighter jet but didn't meet spec. They've been faceted and are available as loose gems! Note that the calibrated cuts have a bit more size variation than usual, up to a quarter mm. Some have bubbles, some are a little tinted, and they glow blue under shortwave 222nm UV to varying amounts because of titanium contamination. This is a really cool material lab sapphire
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