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Jet
Jet

Antigorite
Antigorite



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Antigorite

Jet and Antigorite Optical Properties

Jet
Jet
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1 Optical Properties
1.1 Luster
Waxy
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
AbsentWalter Schumann
pale greenish yellow.
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Translucent
1.5 Refractive Index
1.640-1.6801.530-1.575
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Amorphous
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Translucent

Jet and Antigorite Optic Character

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

Jet and Antigorite Transparency

Similar to their colors, Jet 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, Jet is Gemmological Tables (2004) More from other references while Jet is Gemmological Tables (2004) More from other references in appearance.