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Montebrasite
Montebrasite

Esperite
Esperite



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Montebrasite
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Esperite

Montebrasite and Esperite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
colorless.

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

TransparentWalter Schumann
OpaqueAnthony et al, Opaque, Transparent

Refractive Index

1.578-1.6461.760-1.774
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
monoclinic

Birefringence

0.020-0.0300.012
0 0.296
👆🏻

Clarity

TransparentWalter Schumann
OpaqueAnthony et al

Montebrasite and Esperite Optic Character

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

Montebrasite and Esperite Transparency

Similar to their colors, Montebrasite and Esperite 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, Montebrasite is TransparentWalter Schumann while Montebrasite is TransparentWalter Schumann in appearance.