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Pyrope
Pyrope

Cassiterite
Cassiterite



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Pyrope
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Cassiterite

Pyrope and Cassiterite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Adamantine, Greasy

Pleochroism

None
Pleochroic haloes have been observed. Dichroic in yellow

Dispersion

0.020.07
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.720-1.7561.990-2.105
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
tetragonal

Birefringence

-99990.096-0.098
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Pyrope and Cassiterite Optic Character

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

Similar to their colors, Pyrope and Cassiterite 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.