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Caledonite
Caledonite

Ammolite
Ammolite



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Caledonite
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Ammolite

Caledonite and Ammolite Optical Properties

Optical Properties

Luster

Vitreous
Silky, Vitreous

Pleochroism

Weak
None

Dispersion

0.050.01
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.818-1.9091.520-1.670
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.0910.135-0.145
0 0.296
👆🏻

Clarity

Transparent
-

Caledonite and Ammolite Optic Character

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

Similar to their colors, Caledonite and Ammolite 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.