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Caledonite
Caledonite

Gedrite
Gedrite



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Caledonite
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Gedrite

Caledonite and Gedrite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak
Weak to moderate

Dispersion

0.050.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.818-1.9091.625-1.718
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

Birefringence

0.091-9999
0 0.296
👆🏻

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.