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Spessartine
Spessartine

Pyromorphite
Pyromorphite



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Spessartine
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Pyromorphite

Spessartine and Pyromorphite Optical Properties

Optical Properties

Luster

Vitreous
Resinous, Subadamantine

Pleochroism

-
Weak

Dispersion

0.030.03
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.789-1.8202.042-2.059
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric
Hexagonal

Birefringence

0.0270.010
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Spessartine and Pyromorphite Optic Character

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

Spessartine and Pyromorphite Transparency

Similar to their colors, Spessartine and Pyromorphite 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, Spessartine is while Spessartine is in appearance.