Topaz

Hardness ( Moh )

" 8

Crystal System

Orthorhombic

Specific Gravity

3.56

Refractive Index

1.609 - 1.643

Birefringence

Family

Colour(s)

Colorless, Pale blue, Yellow, Yellowish brown, Red

Cleavage

Francture Type

Subconchoidal

Luster

Streak

White

Transparency

Transparent

Formula

Al2SiO4(F,OH)2

Country

Found In Afghanistan,Algeria,Antarctica,Argentina,Australia,Austria,Bolivia,Brazil,Bulgaria,Cambodia,Cameroon,Canada,China,Czech Republic,DR Congo,Egypt,Eswatini,Ethiopia,Europe,Finland,Finland/Russia,France,Germany,Germany/Czech Republic,Greece,Greenland,Guyana,Hungary,India,Indonesia,Ireland,Italy,Japan,Jordan,Kazakhstan,Kenya,Kyrgyzstan,Laos,Madagascar,Malaysia,Mexico,Mongolia,Mozambique,Myanmar,Namibia,New Zealand,Nicaragua,Niger,Nigeria,Norway,Pakistan,Papua New Guinea,Peru,Poland,Portugal,Romania,Russia,Rwanda,Saudi Arabia,Slovakia,South Africa,South Korea,Spain,Sri Lanka,Sudan,Sweden,Switzerland,Tajikistan,Thailand,Uganda,UK,Ukraine,USA,Uzbekistan,Vietnam,Zambia,Zimbabwe