Schorl and Antigorite Optical Properties

Schorl

Antigorite

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1 Optical Properties

1.1 Luster

Vitreous

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

Very strong: yellow-brown pale yellow

pale greenish yellow.

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

Translucent

1.5 Refractive Index

1.635-1.6721.530-1.575

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

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

1.8 Birefringence

0.025Not Available

0 0.296

1.9 Clarity

Transparent

Translucent

Schorl and Antigorite Optic Character

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

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