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Caledonite
Caledonite

Gedrite
Gedrite



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Caledonite
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Gedrite

Caledonite and Gedrite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Fibrous, Vitreous
1.2 Pleochroism
Weak
Weak to moderate
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Transparent
1.5 Refractive Index
1.818-1.909
1.625-1.718
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
1.8 Birefringence
0.091
Not Available
1.9 Clarity
Transparent
Transparent

Caledonite and Gedrite Optic Character

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

Caledonite and Gedrite Transparency

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