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Verdelite
Verdelite

Sard
Sard



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Verdelite
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Sard

Verdelite and Sard Optical Properties

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Optical Properties

Luster

-
Waxy

Pleochroism

Strong: dark green yellow
-

Dispersion

0.020.01
0.005 1
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Transparency

Transparent, Translucent
Translucent

Refractive Index

1.614-1.6661.535-1.539
1 3.25
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Optic Character

-
-

Crystal System

-
-

Birefringence

0.014-0.0400.008-0.010
0 0.296
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Clarity

Transparent
Translucent

Verdelite and Sard Optic Character

Verdelite and Sard optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Verdelite and Sard 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 Verdelite and Sard 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.

Verdelite and Sard Transparency

Similar to their colors, Verdelite and Sard 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, Verdelite is Transparent and Translucent while Verdelite is Transparent and Translucent in appearance.