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Plumbogummite
Plumbogummite

Ludlamite
Ludlamite



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Plumbogummite
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Ludlamite

Plumbogummite and Ludlamite Optical Properties

Optical Properties

Luster

Resinous
Vitreous, Pearly

Pleochroism

None
-

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.653-1.6881.653-1.693
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
monoclinic

Birefringence

-99990.038-0.044
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Plumbogummite and Ludlamite Optic Character

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

Similar to their colors, Plumbogummite and Ludlamite 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.