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Pyrope
Pyrope

Antigorite
Antigorite



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Pyrope
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Antigorite

Pyrope and Antigorite Optical Properties

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Optical Properties

Luster

Greasy, Vitreous
Waxy, Silky, Resinous, Greasy

Pleochroism

None
pale greenish yellow

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.720-1.7561.530-1.575
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
Monoclinic Domatic H-M Symbol (m) Space Group: Cm

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Pyrope and Antigorite Optic Character

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

Pyrope and Antigorite Transparency

Similar to their colors, Pyrope and Antigorite 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, Pyrope is while Pyrope is in appearance.