Alexandrite Sharp Briolette 3.6ct blue It weighs in at 3

It weighs in at 3

These are Czochralski pulled cobalt spinel grown for use in lasers

pure emerald green color with no fluorescence

The hardness is around 6

Alexandrite Sharp Briolette 3.6ct blue It weighs in at 3This is a lab grown laser alexandrite laser faceted in a custom sharp briolette. It weighs in at 3. 6ct 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 red fluorescence it