Esperite and Antigorite Optical Properties

Esperite

Antigorite

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1 Optical Properties

1.1 Luster

Vitreous

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

colorless.

pale greenish yellow.

1.3 Dispersion

NANA

0.007 1

1.9 Transparency

OpaqueAnthony et al, Opaque, Transparent

Translucent

1.10 Refractive Index

1.760-1.7741.530-1.575

1 3.25

1.12 Optic Character

Not Available

1.13 Crystal System

monoclinic

Monoclinic Domatic H-M Symbol (m) Space Group: Cm

1.14 Birefringence

0.012Not Available

0 0.296

1.15 Clarity

OpaqueAnthony et al

Translucent

Esperite and Antigorite Optic Character

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

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