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throwing rainbows with the slightest provocation
As these were grown for jewelry they range between different shades and intensities
there's nowhere on Earth a crystal like this could grow naturally
Ce alone gives YAG an ultra bright yellow color
SDI/'Star Wars' Laser Ruby Loose Faceted Stones, Fancy Cuts Stone:5.19ct Square Cut throwing rainbows with the slightestThese are lab created laser rubies grown for use in the Strategic Defense Initiative, aka 'Star Wars' program, in the 1980s. Like all rubies they have a high hardness of 9, great brilliance and glow red under UV. This is the most classic gem produced by science: laser ruby. While material of this color would be called 'pink sapphire' in a gemological context, in laser science all corundum doped with chromium is considered ruby (in contrast to pink
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