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Idocrase
Idocrase

Beryl
Beryl



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Idocrase
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Beryl

Idocrase and Beryl Optical Properties

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Optical Properties

Luster

-
Vitreous, Resinous

Pleochroism

-
Weak to distinct

Dispersion

0.020.01
0.005 1
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Transparency

-
Transparent, Transparent to opaque

Refractive Index

1.67-1.761.560-1.604
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
Hexagonal

Birefringence

-99990.0040-0.0070
0 0.296
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Clarity

-
Transparent

Idocrase and Beryl Optic Character

Idocrase and Beryl optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Idocrase and Beryl Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Idocrase and Beryl optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Idocrase and Beryl Transparency

Similar to their colors, Idocrase and Beryl transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Idocrase is while Idocrase is in appearance.