Crocoite and Antigorite Optical Properties

Crocoite

Antigorite

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1 Optical Properties

1.1 Luster

Adamantine

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

Distinctly trichroic

pale greenish yellow.

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

Translucent

1.5 Refractive Index

2.31-2.661.530-1.575

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

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

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

Translucent

Crocoite and Antigorite Optic Character

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

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