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Inderite
Inderite

Helenite
Helenite



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Inderite
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Helenite

Inderite and Helenite Optical Properties

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Optical Properties

Luster

Vitreous, Pearly, Greasy
-

Pleochroism

-
-

Dispersion

-0.04
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.488-1.505-9999
1 3.25
👆🏻

Optic Character

Biaxial/+
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Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
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Birefringence

0.017-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Inderite and Helenite Optic Character

Inderite and Helenite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Inderite and Helenite 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 Inderite and Helenite 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. Inderite has Biaxial/+ character.

Inderite and Helenite Transparency

Similar to their colors, Inderite and Helenite 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, Inderite is while Inderite is in appearance.