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Sillimanite
Sillimanite

Clintonite
Clintonite



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Sillimanite
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Clintonite

Sillimanite and Clintonite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Subadamantine, Silky
Vitreous, Pearly
1.2 Pleochroism
Colourless to pale brown to yellow
X = colorless
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Not Available
1.5 Refractive Index
1.653-1.6851.643-1.648
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
monoclinic
1.8 Birefringence
0.020-0.0220.012-0.015
Achroite
0 0.296
1.9 Clarity
Transparent
Not Available

Sillimanite and Clintonite Optic Character

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

Sillimanite and Clintonite Transparency

Similar to their colors, Sillimanite 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, Sillimanite is Translucent and Transparent while Sillimanite is Translucent and Transparent in appearance.