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Caledonite
Caledonite

Omphacite
Omphacite



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Caledonite
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Omphacite

Caledonite and Omphacite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak
Weak: colorless -- very pale green -- very pale green

Dispersion

0.050.02
0.005 1
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Transparency

Transparent
TranslucentAnthony et al

Refractive Index

1.818-1.9091.662-1.723
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.091-9999
0 0.296
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Clarity

Transparent
TranslucentAnthony et al

Caledonite and Omphacite Optic Character

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

Similar to their colors, Caledonite and Omphacite 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.