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Orthoclase
Orthoclase

Antigorite
Antigorite



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Orthoclase
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Antigorite

Orthoclase and Antigorite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
colorless.
pale greenish yellow.
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Translucent
1.5 Refractive Index
1.518-1.5361.530-1.575
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
1.8 Birefringence
0.0050-0.0060Not Available
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Orthoclase and Antigorite Optic Character

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

Orthoclase and Antigorite Transparency

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