These are faceted pink rubies, grown using the Czochralski pulling methods. Like all rubies they have a high hardness of 9, great brilliance and glow red under UV. These might have been intended for lasers, or perhaps luxury watches. Some pieces have bubbles.The most classic gem produced by science is 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 laser sapphire which is doped with titanium). In a laser this material would be cut into a cylinder, charged up with photons from the sides and emit a beam of coherent light out of the end--in fact the very first laser was built with a ruby. As you would expect for this requires a very high standard of chemical purity and structural perfection--when energizing a crystal imperfections tend to heat up and explode. Czochralski pulling ensures that these stones have perfect crystal structure, high chemical purity and strong, even coloration, which coincidentally makes them exceptional for gem usage as well.This material cuts bright, pink/red stones with a ton of scintillation and super bright fluorescence which gives them an extra pop. They are great for any lover of science, fluorescence or the color pink!
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