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Plumbogummite
Plumbogummite

Friedelite
Friedelite



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Plumbogummite
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Friedelite

Plumbogummite and Friedelite Optical Properties

Optical Properties

Luster

Resinous
-

Pleochroism

None
-

Dispersion

0.040.04
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.653-1.6881.627-1.663
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m

Birefringence

-99990.032-0.035
0 0.296
👆🏻

Clarity

-
Translucent

Plumbogummite and Friedelite Optic Character

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

Plumbogummite and Friedelite Transparency

Similar to their colors, Plumbogummite and Friedelite 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, Plumbogummite is while Plumbogummite is in appearance.