0.79 Carat Natural Alexandrite Chrysoberyl 6.1x4.3mm Loose Real Gemstone Faceted Gem Rare Color Change

Natural Color Change Alexandrite Chrysoberyl (Tested by gemologist)
Measurements: 6.1 x 4.3 mm, 3.0 mm deep
Weight: 0.79 carats
Shape: Oval
Color: Green changing to Purplish Green, slightly brownish (not a strong color change)
Clarity: Type II SI1
This alexandrite fluoresces
Origin: unknown, it was sourced from pre-owned gold jewelry