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Gedrite
Gedrite

Sugilite
Sugilite



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Gedrite
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Sugilite

Gedrite and Sugilite Optical Properties

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1 Optical Properties
1.1 Luster
Fibrous, Vitreous
Vitreous
1.2 Pleochroism
Weak to moderate
Weak
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Translucent
1.5 Refractive Index
1.625-1.7181.607-1.612
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Hexagonal
1.8 Birefringence
Not Available0.003
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Gedrite and Sugilite Optic Character

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

Gedrite and Sugilite Transparency

Similar to their colors, Gedrite and Sugilite 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, Gedrite is Transparent while Gedrite is Transparent in appearance.