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Pyromorphite
Pyromorphite

Franklinite
Franklinite



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Pyromorphite
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Franklinite

Pyromorphite and Franklinite Optical Properties

Optical Properties

Luster

Resinous, Subadamantine
-

Pleochroism

Weak
-

Dispersion

0.030.19
0.005 1
👆🏻

Transparency

Transparent
Translucent

Refractive Index

2.042-2.059-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m

Birefringence

0.010-9999
0 0.296
👆🏻

Clarity

Transparent
Translucent

Pyromorphite and Franklinite Optic Character

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

Pyromorphite and Franklinite Transparency

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