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Garnet
Garnet

Danburite
Danburite



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Garnet
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Danburite

Garnet and Danburite Optical Properties

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Optical Properties

Luster

Vitreous, Adamantine
Vitreous, Greasy

Pleochroism

None
Weak: pale yellow yellow

Dispersion

0.020.02
0.005 1
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Transparency

Transparent, Transparent to translucent
-

Refractive Index

1.730-1.8951.627-1.639
1 3.25
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Optic Character

-
Biaxial/+

Crystal System

Trigonal
Orthorhombic

Birefringence

-99990.006
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Garnet and Danburite Optic Character

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

Garnet and Danburite Transparency

Similar to their colors, Garnet 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, Garnet is Transparent and Transparent to translucent while Garnet is Transparent and Transparent to translucent in appearance.