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Corundum
Corundum

Antigorite
Antigorite



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Corundum
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Antigorite

Corundum and Antigorite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Vitreous
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
None
pale greenish yellow.
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Translucent
1.5 Refractive Index
1.758-1.7801.530-1.575
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
1.8 Birefringence
0.007-0.010Not Available
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Translucent

Corundum and Antigorite Optic Character

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

Corundum and Antigorite Transparency

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