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Amblygonite
Amblygonite

Caledonite
Caledonite



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Amblygonite
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Caledonite

Amblygonite and Caledonite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

weak to none
Weak

Dispersion

0.010.05
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.578-1.6461.818-1.909
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

Triclinic
Orthorhombic

Birefringence

0.020-0.0300.091
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Amblygonite and Caledonite Optic Character

Amblygonite and Caledonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Amblygonite and Caledonite 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 Amblygonite and Caledonite 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. Amblygonite has Biaxial/+ character.

Amblygonite and Caledonite Transparency

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