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Plumbogummite
Plumbogummite

Cavansite
Cavansite



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Plumbogummite
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Cavansite

Plumbogummite and Cavansite Optical Properties

Optical Properties

Luster

Resinous
Vitreous, Pearly

Pleochroism

None
Visible: X=Z= colorless Y= blue

Dispersion

0.040.04
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.653-1.6881.542
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

-99990.009
0 0.296
👆🏻

Clarity

-
-

Plumbogummite and Cavansite Optic Character

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

Similar to their colors, Plumbogummite and Cavansite 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.