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Gedrite
Gedrite

Apatite
Apatite



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Gedrite
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Apatite

Gedrite and Apatite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak to moderate
Blue stones – strong

Dispersion

0.020.01
0.005 1
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Transparency

Transparent
-

Refractive Index

1.625-1.7181.628-1.651
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Hexagonal

Birefringence

-99990.002-0.008
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Gedrite and Apatite Optic Character

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

Gedrite and Apatite Transparency

Similar to their colors, Gedrite and Apatite 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, Gedrite is Transparent while Gedrite is Transparent in appearance.