Heliodor

Hardness ( Moh )

" 7.5-8

Crystal System

Hexagonal

Specific Gravity

2.69

Refractive Index

1.566 - 1.579

Birefringence

Family

Beryl

Colour(s)

pale yellow to a brilliant gold

Cleavage

Francture Type

Conchoidal to irregular

Luster

Streak

White

Transparency

Transparent to translucent

Formula

Be3Al2(SiO3)6

Country

Found In Afghanistan,Argentina,Australia,Brazil,Canada,China,Czech Republic,France,India,Italy,Madagascar,Mexico,Mongolia,Mozambique,Namibia,Nigeria,Norway,Pakistan,Portugal,Russia,South Africa,Spain,Sri Lanka,Ukraine,USA,Vietnam,Zimbabwe