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Plumbogummite
Plumbogummite

Bustamite
Bustamite



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Plumbogummite
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Bustamite

Plumbogummite and Bustamite Optical Properties

Optical Properties

Luster

Resinous
Vitreous

Pleochroism

None
Weak

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.653-1.6881.662-1.707
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Triclinic

Birefringence

-99990.013-0.015
0 0.296
👆🏻

Clarity

-
Transparent

Plumbogummite and Bustamite Optic Character

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

Similar to their colors, Plumbogummite and Bustamite 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.