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Demantoid
Demantoid

Taaffeite
Taaffeite



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Demantoid
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Taaffeite

Demantoid and Taaffeite Optical Properties

Optical Properties

Luster

Adamantine
Vitreous

Pleochroism

None
Weak

Dispersion

0.060.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.880-1.8901.70-1.73
1 3.25
👆🏻

Optic Character

-
-

Crystal System

cubic
Hexagonal

Birefringence

-99990.055
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
-

Demantoid and Taaffeite Optic Character

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

Demantoid and Taaffeite Transparency

Similar to their colors, Demantoid and Taaffeite 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, Demantoid is while Demantoid is in appearance.