×

Sillimanite
Sillimanite

Goshenite
Goshenite



ADD
Compare
X
Sillimanite
X
Goshenite

Sillimanite and Goshenite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Subadamantine, Silky
Vitreous
1.2 Pleochroism
Colourless to pale brown to yellow
Not Available
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Transparent
1.5 Refractive Index
1.653-1.6851.562-1.615
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Hexagonal
1.8 Birefringence
0.020-0.0220.003-0.010
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Sillimanite and Goshenite Optic Character

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

Similar to their colors, Sillimanite and Goshenite 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.