Sapphirine

Hardness ( Moh )

" 7.5

Crystal System

Monoclinic, Triclinic

Specific Gravity

3.54-3.51

Refractive Index

1.714 - 1.723

Birefringence

Family

Colour(s)

blue,green, white, gray, pale red, yellow

Cleavage

Francture Type

Subconchoidal to uneven

Luster

Streak

White

Transparency

Transparent to translucent

Formula

(Mg,Al)8(Al,Si)6O20

Country

Found In Afghanistan,Algeria,Antarctica,Australia,Austria,Canada,China,Czech Republic,Finland,France,Germany,Greece,Greenland,India,Italy,Ivory Coast,Kenya,Libya,Madagascar,Norway,Russia,Slovenia,South Africa,Sri Lanka,Sweden,Tajikistan,Tanzania,Thailand,Uganda,UK,United Arab Emirates,USA