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Sanidine
Sanidine
☒

Agate
Agate
☒



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Sanidine
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Agate
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.01
Transparent
1.518-1.536
-
-
0.005-0.008
Transparent
 
Vitreous
Absent
0.01
Translucent
1.530-1.543
-
Trigonal
0.004
Translucent

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Blue Gemstones

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Star Sapphire
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Starlite
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