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Sinhalite
Sinhalite

Plumbogummite
Plumbogummite



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Sinhalite
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Plumbogummite

Sinhalite and Plumbogummite Optical Properties

Optical Properties

Luster

-
Resinous

Pleochroism

Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
None

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.665-1.7121.653-1.688
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.036-0.042-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
-

Sinhalite and Plumbogummite Optic Character

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

Sinhalite and Plumbogummite Transparency

Similar to their colors, Sinhalite 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, Sinhalite is while Sinhalite is in appearance.