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Boracite
Boracite

Cuprite
Cuprite



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Boracite
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Cuprite

Boracite and Cuprite Optical Properties

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Optical Properties

Luster

Vitreous, Adamantine
Adamantine

Pleochroism

None
visible

Dispersion

-0.05
0.005 1
👆🏻

Transparency

Transparent
TranslucentWalter Schumann

Refractive Index

1.658-1.6732.849
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
cubic

Birefringence

0.010-0.011-9999
0 0.296
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Clarity

Transparent
TranslucentWalter Schumann

Boracite and Cuprite Optic Character

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

Similar to their colors, Boracite and Cuprite 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.