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5 and no major durability issues
As an experimental and extremely difficult-to-grow material it comes at a high premium but I'm extremely glad we've had a chance to be involved--this is the most gorgeous material I've ever worked with
yielding an amazing and unique gem
Even broken it is an incredible gem of science
SDI/'Star Wars' Laser Ruby Loose Faceted Stones, Fancy Cuts Stone:6.27ct Round Cut 5 and no major durabilityThese 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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