Emerald
Emerald crystal from Muzo, Colombia
??? ???
???	Beryl variety
??????? ??????? ( ????????? ???? )	Beryllium aluminium silicate with chromium , Be 3 Al 2 (SiO 3 ) 6 ::Cr
???? ????	Hexagonal
?????
???	Green
????? ????	Hexagonal Crystals
???	Poor Basal Cleavage (Seldom Visible)
??? ?????? (???????? ???)	Conchoidal
??? ???? ???? ??? ????	7.5 - 8.0
???	Vitreous
?????? ( ?????? ?? ???)	White
????? ??? ???	2.70 - 2.78
???????? ?????? (?????? ???)	1.576 - 1.582
??? ??????	Distinct, Blue-Green/Yellow-Green

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