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Radiolarite
Radiolarite

Plumbogummite
Plumbogummite



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Radiolarite
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Plumbogummite

Radiolarite and Plumbogummite Optical Properties

Optical Properties

Luster

-
Resinous

Pleochroism

-
None

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

-
-

Refractive Index

-99991.653-1.688
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
-

Radiolarite and Plumbogummite Optic Character

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

Radiolarite and Plumbogummite Transparency

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