Ruby

Hardness ( Moh )

" 9

Crystal System

Trigonal

Specific Gravity

3.97 - 4.08

Refractive Index

1.762-1.770

Birefringence

Family

Corundum

Colour(s)

Red

Cleavage

Francture Type

Conchoidal, splintery

Luster

Streak

White

Transparency

Transparent, translucent

Formula

Al2O3:Cr

Country

Found In Afghanistan,Antarctica,Asia,Australia,Austria,Brazil,Cambodia,China,Colombia,Czech Republic,France,Germany,Greece,Greenland,India,Israel,Italy,Japan,Kenya,Liberia,Madagascar,Malawi,Mozambique,Myanmar,Nepal,New Zealand,North Macedonia,Norway,Pakistan,Poland,Russia,Rwanda,Somaliland,Sri Lanka,Switzerland,Tajikistan,Tanzania,Thailand,USA,Vietnam,Zimbabwe