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Moonstone
Moonstone

Amblygonite
Amblygonite



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Moonstone
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Amblygonite

Moonstone and Amblygonite Optical Properties

Optical Properties

Luster

Pearly
Vitreous, Pearly

Pleochroism

-
weak to none

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Transparent, Transparent to translucent
-

Refractive Index

1.518-1.5271.578-1.646
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

monoclinic
Triclinic

Birefringence

0.006-0.0070.020-0.030
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Moonstone and Amblygonite Optic Character

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

Moonstone and Amblygonite Transparency

Similar to their colors, Moonstone and Amblygonite 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, Moonstone is Transparent and Transparent to translucent while Moonstone is Transparent and Transparent to translucent in appearance.