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Hessonite Garnet
Hessonite Garnet

Opal
Opal



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Hessonite Garnet
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Opal

Hessonite Garnet and Opal Optical Properties

Optical Properties

Luster

-
Vitreous, Pearly

Pleochroism

-
None

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

1.72-1.751.37-1.52
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric
Trigonal

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
Transparent

Hessonite Garnet and Opal Optic Character

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

Hessonite Garnet and Opal Transparency

Similar to their colors, Hessonite Garnet and Opal 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, Hessonite Garnet is while Hessonite Garnet is in appearance.