SDI/'Star Wars' Laser Ruby Loose Faceted Stones, Fancy Cuts Stone:6.27ct Round Cut Blue Spinel is typically colored

Blue Spinel is typically colored by cobalt

This material was first discovered in the late 90s and is widely used as a glow-in-the-dark pigment

We don't usually sell any kind of glass

yielding an amazing and unique gem

It measures about 27

SDI/'Star Wars' Laser Ruby Loose Faceted Stones, Fancy Cuts Stone:6.27ct Round Cut Blue Spinel is typically coloredThese 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