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Plumbogummite
Plumbogummite

Topaz
Topaz



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Plumbogummite
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Topaz

Plumbogummite and Topaz Optical Properties

Optical Properties

Luster

Resinous
Vitreous

Pleochroism

None
Weak

Dispersion

0.040.01
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.653-1.6881.606-1.644
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

-99990.008-0.011
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Plumbogummite and Topaz Optic Character

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

Similar to their colors, Plumbogummite and Topaz 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.