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Chlorite group
Chlorite group

Chrysoberyl
Chrysoberyl



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Chlorite group
X
Chrysoberyl

Chlorite group and Chrysoberyl Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
X = red; Y = yellow-orange; Z = emerald-green

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

1.57-1.671.746-1.763
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

monoclinic
Orthorhombic

Birefringence

-99990.007-0.013
0 0.296
👆🏻

Clarity

-
Transparent

Chlorite group and Chrysoberyl Optic Character

Chlorite group and Chrysoberyl optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Chlorite group and Chrysoberyl 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 Chlorite group and Chrysoberyl 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. Chrysoberyl has Biaxial/+ character.

Chlorite group and Chrysoberyl Transparency

Similar to their colors, Chlorite group and Chrysoberyl 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, Chlorite group is while Chlorite group is in appearance.