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Boracite
Boracite

Erythrite
Erythrite



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Boracite
X
Erythrite

Boracite and Erythrite Optical Properties

Optical Properties

Luster

Vitreous, Adamantine
Subadamantine, Pearly

Pleochroism

None
Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

Dispersion

-0.03
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.658-1.6731.626-1.629
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.010-0.011-9999
0 0.296
👆🏻

Clarity

Transparent
-

Boracite and Erythrite Optic Character

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

Similar to their colors, Boracite and Erythrite 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.