Alexandrite HyperCube Cut 31.5ct laser rods Czochralski-pulled cobalt spinel can be

Czochralski-pulled cobalt spinel can be grown to ultra high purities and used in lasers as a Q switch

and like Ce:YAG and LuAG it is used as a scintillator to help detect invisible radiation

ﺁ  sourced from an old collectionﺁ  The color intensity and darkness varies considerably from stone to stone

Samarium YAG is used as a non-contact pressure gauge in diamond anvil experiments--the color of its fluorescence changes with pressure

5 (harder than tanzanite and suitable for pendant usage but not ideal for rings)

Alexandrite HyperCube Cut 31.5ct laser rods Czochralski-pulled cobalt spinel can beThis is a lab grown laser alexandrite laser faceted in a custom glittery 'hypercube' design. The stone weighs in at 31. 5 carats. This is a real lab grown alexandrite (not one of the many simulants) which was faceted from a laser crystal top. This material is trichroic (meaning it shows three different colors depending on the direction you look through the stone, aligned with the faces of the cube), color changes under different lights and has strong