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Sugilite
Sugilite

Clintonite
Clintonite



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Sugilite
X
Clintonite

Sugilite and Clintonite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Weak
X = colorless

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.607-1.6121.643-1.648
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
monoclinic

Birefringence

0.0030.012-0.015
0 0.296
👆🏻

Clarity

Translucent
-

Sugilite and Clintonite Optic Character

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

Sugilite and Clintonite Transparency

Similar to their colors, Sugilite and Clintonite 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, Sugilite is Translucent while Sugilite is Translucent in appearance.