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Druzy
Druzy

Sillimanite
Sillimanite



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Druzy
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Sillimanite

Druzy and Sillimanite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous, Subadamantine, Silky
1.2 Pleochroism
Not Available
Colourless to pale brown to yellow
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
Transparent, Translucent
1.5 Refractive Index
Not Available1.653-1.685
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Isometric
Orthorhombic
1.8 Birefringence
Not Available0.020-0.022
Achroite
0 0.296
1.9 Clarity
Opaque
Transparent

Druzy and Sillimanite Optic Character

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

Druzy and Sillimanite Transparency

Similar to their colors, Druzy 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, Druzy is Opaque while Druzy is Opaque in appearance.