Giant Soviet Laser(?) Ruby Crystal, Wand or Sword Blade exotic with representative photos of crystals

with representative photos of crystals on a 1 mm grid

Some have bubble inclusions

We have repurposed these spectrometers with custom accessory hardware and an updated internal database of 500 spectra of the most important gem minerals for matching

These are cabochons cut from titanium laser sapphire

Giant Soviet Laser(?) Ruby Crystal, Wand or Sword Blade exotic with representative photos of crystalsThis is a bizarre crystal of ruby from an old collection of Soviet material. I am not even sure of the growth method it is very long and slender, and flattened, which makes me think it may have been grown by floating zone, though some sort of ultra refined flame fusion could be possible too. The unusual growth and lower concentration pure chromium doping makes me think it is likely laser ruby, meant to be grown for one long rod. The base has some