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Pyrope
Pyrope

Zinnwaldite
Zinnwaldite



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Pyrope
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Zinnwaldite

Pyrope and Zinnwaldite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Pearly, Vitreous

Pleochroism

None
Distinct

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.720-1.7561.565-1.625
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
monoclinic

Birefringence

-99990.040-0.050
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Pyrope and Zinnwaldite Optic Character

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

Similar to their colors, Pyrope and Zinnwaldite 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.