Lapis Lazuli

Lapis Lazuli

Hardness ( Moh )

" 5 - 6

Crystal System

None

Specific Gravity

2.8

Refractive Index

1.5

Birefringence

Family

Colour(s)

Blue

Cleavage

Francture Type

Uneven-Conchoidal

Luster

Streak

blue

Transparency

Translucent

Formula

(Na,Ca)8[(S,Cl,SO4,OH)2|(Al6Si6O24)]

Country

Found In