Jaz77 - Russian Lab Created Pulled Alexandrite True Color Change 2.5 mm (10 pcs) AAA Round Loose Gemstone This is the true synthetic Color Change Alexandrite - Chrysoberyl, not a Flame Fusion Corundum imitation (simulant). Material is completely the same as best varieties of the genuine Alexandrite - Russian, Brazilian or Rhodesian. The color change is from the green in daylight to purplish red in incandescent light. Same quality natural Alexandrite is extremely rear and much more expensive then Diamond, especially stones bigger then 3-4 Carats. Crystal grown by vertically pulled (from melt) method, also known as Czochralski pulled. Quality: AAA Loose Russian Lab Created Pulled Alexandrite True Color Change