×

Schorl
Schorl
☒

Coral
Coral
☒



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Schorl
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Coral
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
Very strong: yellow-brown pale yellow
0.02
Transparent, Translucent
1.635-1.672
-
-
0.025
Transparent
 
-
-
0.03
Translucent
1.486-1.658
-
Trigonal
0.160-0.172
Translucent

Compare Black Gemstones

Black Gemstones

Melanite
Melanite
Hypersthene
Hypersthene
Holmquistite
Holmquistite
Coral
Snowflake Obsidian
Coral Vs Snowflake Obsidian
Coral
Xenotime
Coral Vs Xenotime
Coral
Nacre
Coral Vs Nacre

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