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Andalusite
Andalusite

Chrysoprase
Chrysoprase



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Andalusite
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Chrysoprase

Andalusite and Chrysoprase Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Greasy
strongly trichroic
0.02
Transparent, Translucent
1.627-1.650
-
Orthorhombic
0.009-0.010
Transparent
 
Vitreous, Waxy
-
0.01
Translucent, Opaque, Translucent to nearly opaque
1.530-1.543
-
Trigonal
0.004
Translucent

Andalusite and Chrysoprase Optic Character

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

Andalusite and Chrysoprase Transparency

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