Esperite and Heliotrope Optical Properties

Esperite

Heliotrope

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Optical Properties

Luster

Vitreous

Pleochroism

colorless.

Dispersion

0.020.01

0.005 1

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Transparency

OpaqueAnthony et al, Opaque, Transparent

Refractive Index

1.760-1.7741.53-1.54

1 3.25

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Optic Character

Crystal System

monoclinic

Trigonal

Birefringence

0.0120.004

0 0.296

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Clarity

OpaqueAnthony et al

Esperite and Heliotrope Optic Character

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

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Esperite and Heliotrope Transparency

Similar to their colors, Esperite and Heliotrope 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, Esperite is OpaqueAnthony et al, Opaque and Transparent while Esperite is OpaqueAnthony et al, Opaque and Transparent in appearance.