95606292_artz_Page__Physical_Properties__Optical_Properties
[1] parallel to c-axis [Optical Properties] 
Optical Activity
C o l o r
S t r e a k
L u s t e r
D i a p h a n e i t y
R e f r a c t i v e I n d i c e s
B i r e f r i n g e n c e
P l e o c h r o i s m / D i c h r o i s m
C o e f f i c i e n t o f D i s p e r s i o n
F l u o r e s c e n c e
O p t i c a l A c t i v i t y
The Quartz Page: Physical Properties
Optical Properties