SDI/'Star Wars' Laser Ruby Loose Faceted Stones, Fancy Cuts Stone:5.19ct Square Cut In addition to the original

In addition to the original limited run of signed and numbered rubies we also have unnumbered Styro rubies which are not signed and come in a variety of shapes and sizes

allowing it to function in the unforgiving environment outside our atmosphere

there's nowhere on Earth a crystal like this could grow naturally

As these were grown for jewelry they range between different shades and intensities

It has exceptionally good normal optical properties too

SDI/'Star Wars' Laser Ruby Loose Faceted Stones, Fancy Cuts Stone:5.19ct Square Cut In addition to the originalThese 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