Hurlbutite and Antigorite Optical Properties

Hurlbutite

Antigorite

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1 Optical Properties

1.1 Luster

Vitreous

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

Not Available

pale greenish yellow.

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

Translucent

1.5 Refractive Index

1.595-1.6041.530-1.575

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a

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

1.8 Birefringence

0.009Not Available

0 0.296

1.9 Clarity

Transparent

Translucent

Hurlbutite and Antigorite Optic Character

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

Similar to their colors, Hurlbutite 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, Hurlbutite is Transparent while Hurlbutite is Transparent in appearance.