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Boracite
Boracite

Grossular
Grossular



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Boracite
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Grossular

Boracite and Grossular Optical Properties

Optical Properties

Luster

Vitreous, Adamantine
Greasy, Vitreous

Pleochroism

None
None

Dispersion

-0.02
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.658-1.6731.730-1.760
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
cubic

Birefringence

0.010-0.0110.020
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Boracite and Grossular Optic Character

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

Similar to their colors, Boracite and Grossular 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.