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Natrolite
Natrolite

Esperite
Esperite



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Natrolite
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Esperite

Natrolite and Esperite Optical Properties

Optical Properties

Luster

Vitreous, Silky, Pearly
Vitreous

Pleochroism

-
colorless.

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
OpaqueAnthony et al, Opaque, Transparent

Refractive Index

1.478-1.4931.760-1.774
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.012-0.0130.012
0 0.296
👆🏻

Clarity

Transparent
OpaqueAnthony et al

Natrolite and Esperite Optic Character

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

Natrolite and Esperite Transparency

Similar to their colors, Natrolite 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, Natrolite is Transparent and Translucent while Natrolite is Transparent and Translucent in appearance.