Emerald

Hardness ( Moh )

" 7.5 - 8

Crystal System

Hexagonal

Specific Gravity

2.71

Refractive Index

1.575 - 1.602

Birefringence

Family

Beryl

Colour(s)

Green

Cleavage

Francture Type

Conchoidal

Luster

Streak

White

Transparency

Transparent to opaque

Formula

Be3Al2(SiO3)6

Country

Found In Afghanistan,Argentina,Australia,Austria,Brazil,Bulgaria,Canada,China,Colombia ,Czech Republic,Egypt,Ethiopia,France ,Germany ,Greenland ,India ,Italy ,Kazakhstan ,Madagascar ,Mozambique ,Namibia ,Nigeria ,Norway ,Pakistan ,Peru ,Portugal ,Romania ,Russia ,Rwanda ,Somaliland ,South Africa ,Spain ,Sri Lanka ,Switzerland ,Tanzania ,Ukraine ,USA ,Zambia ,Zimbabwe