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Vivianite
Vivianite
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Ruby
Ruby
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Vivianite
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Ruby
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Pearly
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael O’Donoghue
0.03
Transparent
1.560-1.640
-
-
0.054-0.075
Transparent
 
Vitreous, Adamantine
Strong: purplish-red
0.02
Transparent, Translucent, Transparent to opaque
1.762-1.778
-
Trigonal
0.008
Transparent

Compare Blue Gemstones

Blue Gemstones

Idocrase
Idocrase
Tourmaline Bi Color
Tourmaline Bi Color
Quantum Quattro
Quantum Quattro
Ruby
Watermelon Tourmaline
Ruby Vs Watermelon Tourmaline
Ruby
White Opal
Ruby Vs White Opal
Ruby
Yttrium Aluminium Garnet
Ruby Vs Yttrium Aluminium Garnet

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