Pink Faceted Ruby Gemstones, Cut Pulled Rubies Stone:Bubbly Diamond Cushion, 11.6x9.2mm, 3.72ct with a nice greenish/purple hue

with a nice greenish/purple hue under fluorescent lamps

Note that the smaller squares can sometimes be a bit more trapezoidal

It is an excellent gem

Note that the crystals are still not completely perfect

Pink Faceted Ruby Gemstones, Cut Pulled Rubies Stone:Bubbly Diamond Cushion, 11.6x9.2mm, 3.72ct with a nice greenish/purple hueThese 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