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Tourmaline
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Dallasite
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Tourmaline
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Dallasite
Tourmaline
Dallasite
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Summary
Astrology
Physical Properties
Optical Properties
Benefits
All
1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
typically moderate to strong
Not Available
1.3 Dispersion
0.02
NA
Fluorite Optical Properties
▶
⊕
0.007
1
1.4 Transparency
Transparent, Translucent, Transparent to opaque
Not Available
1.5 Refractive Index
1.614-1.666
1.540
Agate Opal
▶
⊕
1
3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.014-0.040
0.008-0.010
Achroite
▶
⊕
0
0.296
1.9 Clarity
Transparent
Not Available
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