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Violane
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Gemstones
Taurus Gems
Gemini Gems
Leo Gems
Organic Gemstones
Aries Gems
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Libra Gems
Capricorn Gems
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Powellite
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Violane
Powellite
Violane
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Summary
Astrology
Physical Properties
Optical Properties
Benefits
All
1 Optical Properties
1.2 Luster
Greasy, Subadamantine
Not Available
1.4 Pleochroism
In deeply colored specimens: blue greenAnthony et al
Not Available
1.7 Dispersion
NA
NA
Fluorite Optical Properties
▶
⊕
0.007
1
1.15 Transparency
Transparent
Translucent
1.16 Refractive Index
1.974-1.984
1.668-1.703
Agate Opal
▶
⊕
1
3.25
1.17 Optic Character
Not Available
Not Available
1.18 Crystal System
Not Available
Not Available
1.19 Birefringence
Not Available
0.024-0.030
Achroite
▶
⊕
0
0.296
1.20 Clarity
Transparent
Translucent
Compare Blue Gemstones
Powellite Vs Rock Crystal
Powellite Vs Rubellite
Powellite Vs Sanidine
Blue Gemstones
Prase
Prase Opal
Precious Opal
Pyrophyllite
Rock Crystal
Rubellite
Blue Gemstones
Sanidine
Astrology
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Physica...
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Optical...
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Benefits
Sapphire
Astrology
|
Physica...
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Optical...
|
Benefits
Sard
Astrology
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Physica...
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Optical...
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Benefits
Compare Blue Gemstones
Violane Vs Prase Opal
Astrology
|
Physica...
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Optical...
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Benefits
Violane Vs Precious Opal
Astrology
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Physica...
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Optical...
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Benefits
Violane Vs Pyrophyllite
Astrology
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Physica...
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Optical...
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Benefits