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Garnet
Garnet

Sunstone
Sunstone



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Garnet
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Sunstone

Garnet and Sunstone Optical Properties

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Optical Properties

Luster

Vitreous, Adamantine
Vitreous

Pleochroism

None
Weak or absentWalter Schumann

Dispersion

0.020.01
0.005 1
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Transparency

Transparent, Transparent to translucent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.730-1.8951.53-1.55
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Triclinic

Birefringence

-99990.007-0.010
0 0.296
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Clarity

Transparent
Transparent to translucent

Garnet and Sunstone Optic Character

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

Garnet and Sunstone Transparency

Similar to their colors, Garnet and Sunstone 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.