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Boracite
Boracite

Legrandite
Legrandite



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Boracite
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Legrandite

Boracite and Legrandite Optical Properties

Optical Properties

Luster

Vitreous, Adamantine
Vitreous

Pleochroism

None
Colorless

Dispersion

-0.03
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.658-1.6731.702-1.740
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.010-0.0110.060
0 0.296
👆🏻

Clarity

Transparent
-

Boracite and Legrandite Optic Character

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

Boracite and Legrandite Transparency

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