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Antigorite
Antigorite

Gypsum
Gypsum



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Antigorite
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Gypsum

Antigorite and Gypsum Optical Properties

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Optical Properties

Luster

Waxy, Silky, Resinous, Greasy
Vitreous, Silky, Pearly, Waxy

Pleochroism

pale greenish yellow
None

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Translucent
Transparent, Translucent

Refractive Index

1.530-1.5751.521-1.531
1 3.25
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Optic Character

-
-

Crystal System

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

Birefringence

-99990.010
0 0.296
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Clarity

Translucent
Transparent

Antigorite and Gypsum Optic Character

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

Antigorite and Gypsum Transparency

Similar to their colors, Antigorite and Gypsum 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, Antigorite is Translucent while Antigorite is Translucent in appearance.