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Ammolite
Ammolite

Boracite
Boracite



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Ammolite
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Boracite

Ammolite and Boracite Optical Properties

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Optical Properties

Luster

Silky, Vitreous
Vitreous, Adamantine

Pleochroism

None
None

Dispersion

0.01-
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.520-1.6701.658-1.673
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.135-0.1450.010-0.011
0 0.296
👆🏻

Clarity

-
Transparent

Ammolite and Boracite Optic Character

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

Ammolite and Boracite Transparency

Similar to their colors, Ammolite and Boracite 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, Ammolite is while Ammolite is in appearance.