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Prasiolite
Prasiolite

Danburite
Danburite



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Prasiolite
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Danburite

Prasiolite and Danburite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Greasy

Pleochroism

Very weak: light green pale greenWalter Schumann
Weak: pale yellow yellow

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.544-1.5531.627-1.639
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

Trigonal
Orthorhombic

Birefringence

0.0090.006
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Prasiolite and Danburite Optic Character

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

Prasiolite and Danburite Transparency

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