Chondrodite and Sillimanite Optical Properties

Chondrodite

Sillimanite

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1 Optical Properties

1.1 Luster

Vitreous, Greasy

Vitreous, Subadamantine, Silky

1.2 Pleochroism

X golden yellow to orange

Colourless to pale brown to yellow

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

1.5 Refractive Index

1.589-1.6701.653-1.685

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Orthorhombic

1.8 Birefringence

0.027-0.0320.020-0.022

0 0.296

1.9 Clarity

Transparent

Chondrodite and Sillimanite Optic Character

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

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Chondrodite and Sillimanite Transparency

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