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it is challenging to grow these crystals in very large sizes
One idea was to make powerful lasers that would shoot missiles right out of the sky en route
YAG laser garnets are ideal for use in all kinds of jewelry
rendering them inoperable--sometimes to salvage rods they can saw off ends and then repolish them
F-35 Fighter Jet Window Sapphire Loose Calibrated Gems (F35 Gems) Size:8mm Trillion Cut avg. 2ct it is challenging to growThese 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