GIA report online :5231093938 Shape......................oval Cutting style ............... cut Color....................Greenish yellow changing to Brownish yellow Species............... Natural Chrysoberyl Variety.................Natural Alexandrite Geographic origin....... Sri Lanka Treatment : No indication of heating Weight : 4.34carats Measurements : 10.07x8.98x5.80mm Comments : None The stone was selected by Tal Naaman ,Gem Hunter and sent to the GIA Lab in New York Country of Origin is an opinion offered by the seller of this item; this opinion is not substantiated by an official opinion of the Laboratory Insured international shipping with Track & Trace