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Chrysoprase
Chrysoprase

Thomsonite
Thomsonite



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Chrysoprase
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Thomsonite

Chrysoprase and Thomsonite Optical Properties

Optical Properties

Luster

Vitreous, Waxy
Vitreous, Pearly

Pleochroism

-
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Translucent, Opaque, Translucent to nearly opaque
Translucent

Refractive Index

1.530-1.5431.510-1.550
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.0040.015-0.020
0 0.296
👆🏻

Clarity

Translucent
Translucent

Chrysoprase and Thomsonite Optic Character

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

Chrysoprase and Thomsonite Transparency

Similar to their colors, Chrysoprase and Thomsonite 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, Chrysoprase is Translucent, Opaque and Translucent to nearly opaque while Chrysoprase is Translucent, Opaque and Translucent to nearly opaque in appearance.