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Afghanite
Afghanite

Boracite
Boracite



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Afghanite
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Boracite

Afghanite and Boracite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Adamantine

Pleochroism

-
None

Dispersion

0.02-
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.5231.658-1.673
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.0060.010-0.011
0 0.296
👆🏻

Clarity

Transparent
Transparent

Afghanite and Boracite Optic Character

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

Afghanite and Boracite Transparency

Similar to their colors, Afghanite 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, Afghanite is Transparent while Afghanite is Transparent in appearance.